diff --git a/.gitignore b/.gitignore
index 2416a67..83561a8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 obj/
+fcmp-*
diff --git a/Makefile b/Makefile
index eae2261..0da2f8f 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ INCLUDE=include
 
 PROJECT=fcmp
 
-OPT_FLAGS+= -fgraphite -fno-strict-aliasing
+OPT_FLAGS+= -fgraphite
 
 RELEASE_CFLAGS?=  -O3 -march=native -flto $(OPT_FLAGS)
 RELEASE_LDFLAGS?= -O3 -flto
@@ -25,7 +25,7 @@ debug: | dirs $(PROJECT)-debug
 dirs:
 	@mkdir -p obj/src
 
-%.o: %.c
+obj/%.o: %.c
 	$(CC) -c $< $(CFLAGS) -o $@ $(LDFLAGS)
 
 $(PROJECT)-release: CFLAGS := $(RELEASE_CFLAGS) $(CFLAGS)
diff --git a/src/main.c b/src/main.c
index 583ef16..656e916 100644
--- a/src/main.c
+++ b/src/main.c
@@ -8,6 +8,7 @@ static const char* _prog_name = "fcmp";
 
 __attribute__((noreturn)) void usage() 
 {
+	fprintf(stderr, "fcmp: compare files for identity\n");
 	fprintf(stderr, "usage: %s <file1> <file2>\n", _prog_name);
 	exit(-1);
 }