diff --git a/Makefile.target b/Makefile.target
index 03d3646b2..37bb28ed8 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -91,7 +91,7 @@ tcg/tcg.o: cpu.h
 
 # HELPER_CFLAGS is used for all the code compiled with static register
 # variables
-%_helper.o cpu-exec.o user-exec.o: QEMU_CFLAGS += $(HELPER_CFLAGS)
+op_helper.o cpu-exec.o user-exec.o: QEMU_CFLAGS += $(HELPER_CFLAGS)
 
 # Note: this is a workaround. The real fix is to avoid compiling
 # cpu_signal_handler() in user-exec.c.