diff --git a/Makefile b/Makefile
index 3dd073f..c9d8b6d 100644
--- a/Makefile
+++ b/Makefile
@@ -89,6 +89,9 @@ endif
 
 $(FNAME_$(TARGET)): $(SOURCES) $(XFILES)
 	$(CXX) $^ -std=c++98 $(CFLAGS_G) $(MOREFLAGS) $(CPPFLAGS) $(CFLAGS) $(CXXFLAGS) $(LFLAGS) -o$@
+ifeq ($(CFLAGS),-g)
+	echo 'Compiled Floating IPS in debug mode; for better performance, use ./make.sh instead'
+endif
 
 ifeq ($(TARGET),gtk)
 install: