diff --git a/Makefile b/Makefile
index 48c8b2c..4e48a2e 100644
--- a/Makefile
+++ b/Makefile
@@ -97,7 +97,7 @@ all: $(SOFILE) i18n
 
 ### Implicit rules:
 
-%.o: %.c
+%.o: %.c Makefile
 	$(CXX) $(CXXFLAGS) -c $(DEFINES) $(INCLUDES) -o $@ $<
 
 ### Dependencies: