diff --git a/sleepyhead/sleepyhead.pro b/sleepyhead/sleepyhead.pro
index 65325594..02e33dff 100644
--- a/sleepyhead/sleepyhead.pro
+++ b/sleepyhead/sleepyhead.pro
@@ -127,14 +127,12 @@ win32 {
         LIBS += -lz
     }
 
-    MY_LIB_FILES += $${DESTDIR}/opengl32sw.dll
-    extra_libs.files = MY_LIB_FILES
-    extra_libs.path = $$DESTDIR
-    INSTALLS += extra_libs
 
-    CONFIG += precompile_header
-    PRECOMPILED_HEADER = pch.h
-    HEADERS += pch.h
+    if (*-msvc*) {
+        CONFIG += precompile_header
+        PRECOMPILED_HEADER = pch.h
+        HEADERS += pch.h
+    }
 
 }