diff --git a/kfourinline-19.08.2.orig/src/kgameprocess.cpp b/kfourinline-19.08.2/src/kgameprocess.cpp
--- a/kfourinline-19.08.2.orig/src/kgameprocess.cpp
+++ b/kfourinline-19.08.2/src/kgameprocess.cpp
@@ -30,7 +30,6 @@
 #include <cstdio>
 #include <cstdlib>
 #include <string>
-#include <unistd.h>
 
 #define READ_BUFFER_SIZE  1024
 
diff --git a/src/kgameprocess.cpp b/src/kgameprocess.cpp
--- a/src/kgameprocess.cpp
+++ b/src/kgameprocess.cpp
@@ -30,7 +30,6 @@
 #include <cstdio>
 #include <cstdlib>
 #include <string>
-#include <unistd.h>
 
 #define READ_BUFFER_SIZE  1024