diff --git a/libr/bin/bin.c b/libr/bin/bin.c
index 072c8089ec212..57304a3fc1098 100644
--- a/libr/bin/bin.c
+++ b/libr/bin/bin.c
@@ -431,7 +431,7 @@ R_API int r_bin_load_io_at_offset_as_sz(RBin *bin, int fd, ut64 baseaddr,
 	// this thing works for 2GB ELF core from vbox
 	if (!buf_bytes) {
 		if (sz < 1) {
-			eprintf ("Cannot allocate %d bytes\n", (int)(sz + 1));
+			eprintf ("Cannot allocate %d bytes\n", (int)(sz));
 			return false;
 		}
 		buf_bytes = calloc (1, sz);
@@ -445,7 +445,6 @@ R_API int r_bin_load_io_at_offset_as_sz(RBin *bin, int fd, ut64 baseaddr,
 		}
 	}
 #endif
-
 	if (bin->use_xtr && !name && (st64)sz > 0) {
 		// XXX - for the time being this is fine, but we may want to
 		// change the name to something like
@@ -465,7 +464,7 @@ R_API int r_bin_load_io_at_offset_as_sz(RBin *bin, int fd, ut64 baseaddr,
 								(void) iob->fd_read_at (io, tfd, 0, buf_bytes, sz);
 							}
 						}
-				//DOUBLECLOSE UAF : iob->fd_close (io, tfd);
+						// DOUBLECLOSE UAF : iob->fd_close (io, tfd);
 						tfd = -1;	// marking it closed
 					} else if (sz != file_sz) {
 						(void) iob->read_at (io, 0LL, buf_bytes, sz);
diff --git a/libr/core/cmd_help.c b/libr/core/cmd_help.c
index a826364146962..49f08699a5f09 100644
--- a/libr/core/cmd_help.c
+++ b/libr/core/cmd_help.c
@@ -21,46 +21,46 @@ static ut32 vernum(const char *s) {
 }
 
 static const char *help_msg_root[] = {
-	"%var", "=value", "Alias for 'env' command",
-	"*", "[?] off[=[0x]value]", "Pointer read/write data/values (see ?v, wx, wv)",
-	"(macro arg0 arg1)",  "", "Manage scripting macros",
+	"%var", "=value", "alias for 'env' command",
+	"*", "[?] off[=[0x]value]", "pointer read/write data/values (see ?v, wx, wv)",
+	"(macro arg0 arg1)",  "", "manage scripting macros",
 	".", "[?] [-|(m)|f|!sh|cmd]", "Define macro or load r2, cparse or rlang file",
-	"=","[?] [cmd]", "Send/Listen for Remote Commands (rap://, http://, <fd>)",
-	"<","[...]", "Push escaped string into the RCons.readChar buffer",
-	"/","[?]", "Search for bytes, regexps, patterns, ..",
-	"!","[?] [cmd]", "Run given command as in system(3)",
+	"=","[?] [cmd]", "send/listen for remote commands (rap://, http://, <fd>)",
+	"<","[...]", "push escaped string into the RCons.readChar buffer",
+	"/","[?]", "search for bytes, regexps, patterns, ..",
+	"!","[?] [cmd]", "run given command as in system(3)",
 	"#","[?] !lang [..]", "Hashbang to run an rlang script",
-	"a","[?]", "Analysis commands",
-	"b","[?]", "Display or change the block size",
-	"c","[?] [arg]", "Compare block with given data",
-	"C","[?]", "Code metadata (comments, format, hints, ..)",
-	"d","[?]", "Debugger commands",
-	"e","[?] [a[=b]]", "List/get/set config evaluable vars",
-	"f","[?] [name][sz][at]", "Add flag at current address",
-	"g","[?] [arg]", "Generate shellcodes with r_egg",
-	"i","[?] [file]", "Get info about opened file from r_bin",
-	"k","[?] [sdb-query]", "Run sdb-query. see k? for help, 'k *', 'k **' ...",
+	"a","[?]", "analysis commands",
+	"b","[?]", "display or change the block size",
+	"c","[?] [arg]", "compare block with given data",
+	"C","[?]", "code metadata (comments, format, hints, ..)",
+	"d","[?]", "debugger commands",
+	"e","[?] [a[=b]]", "list/get/set config evaluable vars",
+	"f","[?] [name][sz][at]", "add flag at current address",
+	"g","[?] [arg]", "generate shellcodes with r_egg",
+	"i","[?] [file]", "get info about opened file from r_bin",
+	"k","[?] [sdb-query]", "run sdb-query. see k? for help, 'k *', 'k **' ...",
 	"L","[?] [-] [plugin]", "list, unload load r2 plugins",
-	"m","[?]", "Mountpoints commands",
-	"o","[?] [file] ([offset])", "Open file at optional address",
-	"p","[?] [len]", "Print current block with format and length",
-	"P","[?]", "Project management utilities",
-	"q","[?] [ret]", "Quit program with a return value",
-	"r","[?] [len]", "Resize file",
-	"s","[?] [addr]", "Seek to address (also for '0x', '0x1' == 's 0x1')",
-	"S","[?]", "Io section manipulation information",
-	"t","[?]", "Types, noreturn, signatures, C parser and more",
+	"m","[?]", "mountpoints commands",
+	"o","[?] [file] ([offset])", "open file at optional address",
+	"p","[?] [len]", "print current block with format and length",
+	"P","[?]", "project management utilities",
+	"q","[?] [ret]", "quit program with a return value",
+	"r","[?] [len]", "resize file",
+	"s","[?] [addr]", "seek to address (also for '0x', '0x1' == 's 0x1')",
+	"S","[?]", "io section manipulation information",
+	"t","[?]", "types, noreturn, signatures, C parser and more",
 	"T","[?] [-] [num|msg]", "Text log utility",
 	"u","[?]", "uname/undo seek/write",
-	"V","", "Visual mode (V! = panels, VV = fcngraph, VVV = callgraph)",
-	"w","[?] [str]", "Multiple write operations",
-	"x","[?] [len]", "Alias for 'px' (print hexadecimal)",
+	"V","", "visual mode (V! = panels, VV = fcngraph, VVV = callgraph)",
+	"w","[?] [str]", "multiple write operations",
+	"x","[?] [len]", "alias for 'px' (print hexadecimal)",
 	"y","[?] [len] [[[@]addr", "Yank/paste bytes from/to memory",
-	"z", "[?]", "Zignatures management",
+	"z", "[?]", "zignatures management",
 	"?[??]","[expr]", "Help or evaluate math expression",
-	"?$?", "", "Show available '$' variables and aliases",
-	"?@?", "", "Misc help for '@' (seek), '~' (grep) (see ~?""?)",
-	"?>?", "", "Output redirection",
+	"?$?", "", "show available '$' variables and aliases",
+	"?@?", "", "misc help for '@' (seek), '~' (grep) (see ~?""?)",
+	"?>?", "", "output redirection",
 	NULL
 };
 
@@ -68,7 +68,7 @@ static const char *help_msg_question[] = {
 	"Usage: ?[?[?]] expression", "", "",
 	"?", " eip-0x804800", "show hex and dec result for this math expr",
 	"?:", "", "list core cmd plugins",
-	"[cmd]?*", "", "Recursive help for the given cmd",
+	"[cmd]?*", "", "recursive help for the given cmd",
 	"?!", " [cmd]", "run cmd if $? == 0",
 	"?$", "", "show value all the variables ($)",
 	"?+", " [cmd]", "run cmd if $? > 0",
@@ -121,7 +121,7 @@ static const char *help_msg_question_v[] = {
 	"$$", "", "here (current virtual seek)",
 	"$$$", "", "current non-temporary virtual seek",
 	"$?", "", "last comparison value",
-	"$alias", "=value", "Alias commands (simple macros)",
+	"$alias", "=value", "alias commands (simple macros)",
 	"$b", "", "block size",
 	"$B", "", "base address (aligned lowest map address)",
 	"$f", "", "jump fail address (e.g. jz 0x10 => next instruction)",
@@ -171,11 +171,11 @@ static const char *help_msg_question_V[] = {
 };
 
 static const char *help_msg_greater_sign[] = {
-	"Usage:", "[cmd]>[file]", "Redirects the console output of 'cmd' to 'file'",
-	"[cmd] > [file]", "", "Redirects STDOUT of 'cmd' to 'file'",
-	"[cmd] H> [file]", "", "Redirects html output of 'cmd' to 'file'",
-	"[cmd] 2> [file]", "", "Redirects STDERR of 'cmd' to 'file'",
-	"[cmd] 2> /dev/null", "", "Omits the STDERR output of 'cmd'",
+	"Usage:", "[cmd]>[file]", "redirects console from 'cmd' output to 'file'",
+	"[cmd] > [file]", "", "redirect STDOUT of 'cmd' to 'file'",
+	"[cmd] H> [file]", "", "redirect html output of 'cmd' to 'file'",
+	"[cmd] 2> [file]", "", "redirect STDERR of 'cmd' to 'file'",
+	"[cmd] 2> /dev/null", "", "omit the STDERR output of 'cmd'",
 	NULL
 };
 
diff --git a/libr/io/p/io_default.c b/libr/io/p/io_default.c
index 2dedb0d54e102..50ac2c9bebb4d 100644
--- a/libr/io/p/io_default.c
+++ b/libr/io/p/io_default.c
@@ -226,10 +226,14 @@ static int r_io_def_mmap_read(RIO *io, RIODesc *fd, ut8 *buf, int count) {
 			free (a_buf);
 			return count;
 		}
+		if (lseek (mmo->fd, io->off, SEEK_SET) < 0) {
+			return -1;
+		}
 		return read (mmo->fd, buf, count);
 	}
-	if (mmo->buf->length < io->off)
+	if (mmo->buf->length < io->off) {
 		io->off = mmo->buf->length;
+	}
 	return r_buf_read_at (mmo->buf, io->off, buf, count);
 }
 
diff --git a/libr/util/buf.c b/libr/util/buf.c
index fad24c68b1a83..05386d6f32d7b 100644
--- a/libr/util/buf.c
+++ b/libr/util/buf.c
@@ -208,7 +208,9 @@ R_API ut64 r_buf_size (RBuffer *b) {
 R_API RBuffer *r_buf_mmap (const char *file, int flags) {
 	int rw = flags & R_IO_WRITE ? true : false;
 	RBuffer *b = r_buf_new ();
-	if (!b) return NULL;
+	if (!b) {
+		return NULL;
+	}
 	b->mmap = r_file_mmap (file, rw, 0);
 	if (b->mmap) {
 		b->buf = b->mmap->buf;
diff --git a/libr/util/file.c b/libr/util/file.c
index 9861a4395f176..f0a9cb1691ce8 100644
--- a/libr/util/file.c
+++ b/libr/util/file.c
@@ -828,7 +828,9 @@ static RMmap *r_file_mmap_other (RMmap *m) {
 R_API RMmap *r_file_mmap (const char *file, bool rw, ut64 base) {
 	RMmap *m = NULL;
 	int fd = -1;
-	if (!rw && !r_file_exists (file)) return m;
+	if (!rw && !r_file_exists (file)) {
+		return m;
+	}
 	fd = r_sandbox_open (file, rw? O_RDWR: O_RDONLY, 0644);
 	if (fd == -1 && !rw) {
 		eprintf ("r_file_mmap: file does not exis.\n");