diff --git a/branding/Makefile.in b/branding/Makefile.in
index 34863f0..74d342d 100644
--- a/branding/Makefile.in
+++ b/branding/Makefile.in
@@ -60,7 +60,7 @@ $(BINDIR)/%.png: \
 
 	@echo $@ ...
 	@$(MKDIR) `dirname $@`
-	@$(CONVERT) -background transparent $< $@
+	@$(CONVERT) -strip -background transparent $< $@
 	@$(OPTIPNG) -o7 $@
 
 $(BINDIR)/%.ico: \
--
libgit2 0.21.2