diff --git a/src/Command/FsChownCommand.php b/src/Command/FsChownCommand.php
index 387b42b..3dbd50e 100644
--- a/src/Command/FsChownCommand.php
+++ b/src/Command/FsChownCommand.php
@@ -166,6 +166,7 @@ private function getProcess($arguments)
         return $this
             ->processBuilder
             ->setArguments($arguments)
+            ->setTimeout(0.0)
             ->getProcess()
         ;
     }
diff --git a/src/Model/FsMount.php b/src/Model/FsMount.php
index 3be12c9..ac1623e 100644
--- a/src/Model/FsMount.php
+++ b/src/Model/FsMount.php
@@ -77,6 +77,7 @@ private function getProcess($arguments)
         return $this
             ->processBuilder
             ->setArguments($arguments)
+            ->setTimeout(0.0)
             ->getProcess()
         ;
     }
diff --git a/test/Command/FsChownCommandTest.php b/test/Command/FsChownCommandTest.php
index 3f5b7dc..f7b61fa 100644
--- a/test/Command/FsChownCommandTest.php
+++ b/test/Command/FsChownCommandTest.php
@@ -32,7 +32,7 @@ protected function setUp()
         ;
         $this->processBuilder = $this
             ->getMockBuilder(ProcessBuilder::class)
-            ->setMethods(array('setArguments', 'getProcess'))
+            ->setMethods(array('setArguments', 'setTimeout', 'getProcess'))
             ->getMock()
         ;
         $this->processBuilder
@@ -43,6 +43,10 @@ protected function setUp()
             ->method('setArguments')
             ->willReturnSelf()
         ;
+        $this->processBuilder
+            ->method('setTimeout')
+            ->willReturnSelf()
+        ;
         $this->lookup = $this
             ->getMockBuilder(AclObjectLookupInterface::class)
             ->getMock()
@@ -225,6 +229,12 @@ public function testChownChangesOnlyUserOwnershipWhenGroupOwnershipMatchesArg()
                 )
             )
         ;
+        $this
+            ->processBuilder
+            ->expects($this->once())
+            ->method('setTimeout')
+            ->with($this->equalTo(0.0))
+        ;
         $this
             ->process
             ->method('run')
@@ -292,6 +302,12 @@ public function testChownChangesOnlyGroupOwnershipWhenUserOwnershipMatchesArg()
                 )
             )
         ;
+        $this
+            ->processBuilder
+            ->expects($this->once())
+            ->method('setTimeout')
+            ->with($this->equalTo(0.0))
+        ;
         $this
             ->process
             ->method('run')
@@ -364,6 +380,12 @@ public function testChownThrowsExceptionWhenItFailsToChangesOwnership()
                 )
             )
         ;
+        $this
+            ->processBuilder
+            ->expects($this->once())
+            ->method('setTimeout')
+            ->with($this->equalTo(0.0))
+        ;
         $this
             ->process
             ->method('run')
@@ -428,6 +450,12 @@ public function testChownChangesOwnership()
                 )
             )
         ;
+        $this
+            ->processBuilder
+            ->expects($this->once())
+            ->method('setTimeout')
+            ->with($this->equalTo(0.0))
+        ;
         $this
             ->process
             ->method('run')
@@ -484,6 +512,11 @@ public function testChownDoesNotChangeOwnershipInCheckMode()
             ->expects($this->never())
             ->method('setArguments')
         ;
+        $this
+            ->processBuilder
+            ->expects($this->never())
+            ->method('setTimeout')
+        ;
         $this
             ->process
             ->expects($this->never())
diff --git a/test/Model/FsMountTest.php b/test/Model/FsMountTest.php
index e863ab1..1540c2f 100644
--- a/test/Model/FsMountTest.php
+++ b/test/Model/FsMountTest.php
@@ -23,7 +23,7 @@ protected function setUp()
         ;
         $this->processBuilder = $this
             ->getMockBuilder(ProcessBuilder::class)
-            ->setMethods(array('setArguments', 'getProcess'))
+            ->setMethods(array('setArguments', 'setTimeout', 'getProcess'))
             ->getMock()
         ;
         $this->processBuilder
@@ -34,6 +34,10 @@ protected function setUp()
             ->method('setArguments')
             ->willReturnSelf()
         ;
+        $this->processBuilder
+            ->method('setTimeout')
+            ->willReturnSelf()
+        ;
     }
 
     /**
@@ -83,6 +87,12 @@ public function testMountedWithMountedFilesystemWillReturnTrue()
             ->method('setArguments')
             ->with($this->equalTo(array('mountpoint', '-q', '/mnt/point')))
         ;
+        $this
+            ->processBuilder
+            ->expects($this->once())
+            ->method('setTimeout')
+            ->with($this->equalTo(0.0))
+        ;
 
         $fsMount->mounted('/mnt/point');
     }
@@ -121,6 +131,12 @@ public function testMountWhenProcessFailsWillThrowException()
             ->method('setArguments')
             ->with($this->equalTo(array('mount', '/mnt/point')))
         ;
+        $this
+            ->processBuilder
+            ->expects($this->once())
+            ->method('setTimeout')
+            ->with($this->equalTo(0.0))
+        ;
 
         $fsMount->mount('/mnt/point');
     }
@@ -175,6 +191,12 @@ public function testUmountWhenProcessFailsWillThrowException()
             ->method('setArguments')
             ->with($this->equalTo(array('umount', '/mnt/point')))
         ;
+        $this
+            ->processBuilder
+            ->expects($this->once())
+            ->method('setTimeout')
+            ->with($this->equalTo(0.0))
+        ;
 
         $fsMount->umount('/mnt/point');
     }