diff --git a/include/GToolkit/Makefile b/include/GToolkit/Makefile
index 3ea7c20..833b84c 100644
--- a/include/GToolkit/Makefile
+++ b/include/GToolkit/Makefile
@@ -15,9 +15,9 @@ distclean: clean
 
 install:
 	$(MKDIR) $(DESTDIR)$(INCLUDEDIR)
-	$(INSTALL) -m 0644 -- GWidget.h $(DESTDIR)$(INCLUDEDIR)/GWidget.h
+	$(INSTALL) -m 0644 GWidget.h $(DESTDIR)$(INCLUDEDIR)/GWidget.h
 	$(MKDIR) $(DESTDIR)$(INCLUDEDIR)
-	$(INSTALL) -m 0644 -- GWindow.h $(DESTDIR)$(INCLUDEDIR)/GWindow.h
+	$(INSTALL) -m 0644 GWindow.h $(DESTDIR)$(INCLUDEDIR)/GWindow.h
 
 uninstall:
 	$(RM) -- $(DESTDIR)$(INCLUDEDIR)/GWidget.h
diff --git a/include/Makefile b/include/Makefile
index 6bb75c5..dc77cf0 100644
--- a/include/Makefile
+++ b/include/Makefile
@@ -22,7 +22,7 @@ distclean:
 install:
 	@for i in $(SUBDIRS); do (cd "$$i" && $(MAKE) install) || exit; done
 	$(MKDIR) $(DESTDIR)$(INCLUDEDIR)
-	$(INSTALL) -m 0644 -- GToolkit.h $(DESTDIR)$(INCLUDEDIR)/GToolkit.h
+	$(INSTALL) -m 0644 GToolkit.h $(DESTDIR)$(INCLUDEDIR)/GToolkit.h
 
 uninstall:
 	@for i in $(SUBDIRS); do (cd "$$i" && $(MAKE) uninstall) || exit; done
diff --git a/src/Makefile b/src/Makefile
index d40d987..e9b1e11 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -48,8 +48,8 @@ distclean: clean
 
 install: $(TARGETS)
 	$(MKDIR) $(DESTDIR)$(PREFIX)/lib
-	$(INSTALL) -m 0644 -- libGToolkit.a $(DESTDIR)$(PREFIX)/lib/libGToolkit.a
-	$(INSTALL) -m 0755 -- libGToolkit.so.0.0 $(DESTDIR)$(PREFIX)/lib/libGToolkit.so.0.0
+	$(INSTALL) -m 0644 libGToolkit.a $(DESTDIR)$(PREFIX)/lib/libGToolkit.a
+	$(INSTALL) -m 0755 libGToolkit.so.0.0 $(DESTDIR)$(PREFIX)/lib/libGToolkit.so.0.0
 	$(LN) -s -- libGToolkit.so.0.0 $(DESTDIR)$(PREFIX)/lib/libGToolkit.so.0
 	$(LN) -s -- libGToolkit.so.0.0 $(DESTDIR)$(PREFIX)/lib/libGToolkit.so