diff --git a/source/compiler/sc1.c b/source/compiler/sc1.c
index 57192c4..d7f2861 100644
--- a/source/compiler/sc1.c
+++ b/source/compiler/sc1.c
@@ -40,7 +40,7 @@
   #include <binreloc.h> /* from BinReloc, see www.autopackage.org */
 #endif
 
-#if defined __APPLE__
+#if defined LINUX || defined __APPLE__
   #include <unistd.h>
 #endif