diff --git a/Android.mk b/Android.mk
index 224bb6f..e2c5eac 100644
--- a/Android.mk
+++ b/Android.mk
@@ -5,7 +5,7 @@ LOCAL_PATH := $(call my-dir)
 
 ifeq ($(TARGET_DEVICE),caiman)
 
-FIRMWARE_IMAGES := $(wildcard $(LOCAL_PATH)/firmware/*)
+FIRMWARE_IMAGES := $(wildcard $(LOCAL_PATH)/firmware/*.img)
 
 $(foreach f, $(notdir $(FIRMWARE_IMAGES)), \
   $(call add-radio-file,firmware/$(f)))