diff --git a/src/Main/MainCmd.cpp b/src/Main/MainCmd.cpp
index 4f75e013b6..54430ff2c8 100644
--- a/src/Main/MainCmd.cpp
+++ b/src/Main/MainCmd.cpp
@@ -27,10 +27,6 @@
 #undef _PreComp_
 #endif
 
-#ifdef FC_OS_LINUX
-#include <unistd.h>
-#endif
-
 #if HAVE_CONFIG_H
 #include <config.h>
 #endif  // HAVE_CONFIG_H
diff --git a/src/Main/MainGui.cpp b/src/Main/MainGui.cpp
index 07d801b6bf..645e6df06e 100644
--- a/src/Main/MainGui.cpp
+++ b/src/Main/MainGui.cpp
@@ -28,15 +28,10 @@
 #include <dbghelp.h>
 #endif
 
-
 #ifdef _PreComp_
 #undef _PreComp_
 #endif
 
-#ifdef FC_OS_LINUX
-#include <unistd.h>
-#endif
-
 #if HAVE_CONFIG_H
 #include <config.h>
 #endif  // HAVE_CONFIG_H
diff --git a/src/Main/MainPy.cpp b/src/Main/MainPy.cpp
index 554af37e70..82d00e7d18 100644
--- a/src/Main/MainPy.cpp
+++ b/src/Main/MainPy.cpp
@@ -31,10 +31,6 @@
 #include <windows.h>
 #endif
 
-#if defined(FC_OS_LINUX) || defined(FC_OS_BSD)
-#include <unistd.h>
-#endif
-
 #ifdef FC_OS_MACOSX
 #include <mach-o/dyld.h>
 #include <string>