diff --git a/boot/bootutil/src/caps.c b/boot/bootutil/src/caps.c
index 83b4dfa..b449a6b 100644
--- a/boot/bootutil/src/caps.c
+++ b/boot/bootutil/src/caps.c
@@ -47,3 +47,12 @@
 
     return res;
 }
+
+uint32_t bootutil_get_num_images(void)
+{
+#if defined(MCUBOOT_IMAGE_NUMBER)
+    return MCUBOOT_IMAGE_NUMBER;
+#else
+    return 1;
+#endif
+}