diff --git a/cutils.a b/cutils.a
index d078296..93cf287 100644
Binary files a/cutils.a and b/cutils.a differ
diff --git a/makefile b/makefile
index da90757..730a956 100644
--- a/makefile
+++ b/makefile
@@ -23,7 +23,7 @@ SOURCES = $(wildcard $(SRC_DIR)/*.c)
 OBJECTS = $(SOURCES:$(SRC_DIR)/%.c=$(OBJ_DIR)/%.o)
 
 # memory checking
-MEMCHECK = 1
+MEMCHECK = 0
 
 # The default targetall: directories $(LIBRARY)
 all: directories $(LIBRARY)
@@ -42,7 +42,7 @@ $(OBJ_DIR)/%.o: $(SRC_DIR)/%.c
 	$(CC) $(CFLAGS) -c -o $@ $< -D MEMCHECK=$(MEMCHECK)
 
 check:
-	$(CC) $(CFLAGS) -o $(BIN_DIR)/test test.c $(LIBRARY).a -D MEMCHECK=$(MEMCHECK)
+	$(CC) $(CFLAGS) -o $(BIN_DIR)/test test.c $(LIBRARY).a -D MEMCHECK=1
 	bin/test
 
 clean: