diff --git a/unit/GNUmakefile b/unit/GNUmakefile
index 9f033067..67f7c63f 100644
--- a/unit/GNUmakefile
+++ b/unit/GNUmakefile
@@ -150,7 +150,7 @@ check: $(TARGET)
 	./$(TARGET) 
 
 valgrind: $(TARGET)
-	valgrind --leak-check=yes --log-file=$(TARGET).valgrind.out  ./$(TARGET)
+	valgrind --leak-check=full --log-file=$(TARGET).valgrind.out  ./$(TARGET)
 
 $(TARGET): $(TOBJS) $(POBJS) $(PPOBJS) $(SOBJS)
 	$(CXXLINK) $(TOBJS) $(POBJS) $(PPOBJS) $(SOBJS) $(LIBS)