diff --git a/libfprint/drivers_api.h b/libfprint/drivers_api.h
index 27bd998..9dd29fc 100644
--- a/libfprint/drivers_api.h
+++ b/libfprint/drivers_api.h
@@ -92,9 +92,5 @@ struct fp_img_driver {
 	void (*deactivate)(struct fp_img_dev *dev);
 };
 
-struct fp_minutiae;
-
-/* for image drivers */
-
 #endif
 
diff --git a/libfprint/fpi-img.h b/libfprint/fpi-img.h
index 616db3f..4a57be2 100644
--- a/libfprint/fpi-img.h
+++ b/libfprint/fpi-img.h
@@ -22,6 +22,8 @@
 
 #include <stdint.h>
 
+struct fp_minutiae;
+
 /* bit values for fp_img.flags */
 #define FP_IMG_V_FLIPPED	(1<<0)
 #define FP_IMG_H_FLIPPED	(1<<1)