diff --git a/Rules.mk b/Rules.mk
index 4cb5e19a9..30e2e216a 100644
--- a/Rules.mk
+++ b/Rules.mk
@@ -212,6 +212,7 @@ MOCFLAGS = $(filter -I%, $(CXXFLAGS) $(EXTRA_FLAGS)) $(filter -D%, $(CXXFLAGS) $
 # This creates the ui headers.
 ui_%.h: %.ui .uic
 	@$(PRETTYECHO) '    UIC' $<
+	@mkdir -p .uic/qt-ui
 	$(COMPILE_PREFIX)$(UIC) $< -o .uic/$@
 
 .uic: