diff --git a/casadm/Makefile b/casadm/Makefile
index a7d77b9..e5bdee6 100644
--- a/casadm/Makefile
+++ b/casadm/Makefile
@@ -158,7 +158,7 @@ endif
 -include $(addprefix $(OBJDIR),$(OBJS:.o=.d))
 
 manpage:
-	gzip -k $(TARGET).8
+	gzip -k -f $(TARGET).8
 
 clean:
 	@echo "  CLEAN "
diff --git a/utils/Makefile b/utils/Makefile
index b1f445f..37c38b4 100644
--- a/utils/Makefile
+++ b/utils/Makefile
@@ -24,8 +24,8 @@ endif
 all: manpage
 
 manpage:
-	gzip -k opencas.conf.5
-	gzip -k casctl.8
+	gzip -k -f opencas.conf.5
+	gzip -k -f casctl.8
 
 install: install_files
 ifeq (, $(PYTHON3))