diff --git a/src/logic/amgc_map_input.c b/src/logic/amgc_map_input.c
index b4e07ea..c0d4a2b 100644
--- a/src/logic/amgc_map_input.c
+++ b/src/logic/amgc_map_input.c
@@ -35,9 +35,16 @@ int amgc_map_input(
 	if ((ret = fstat(fd,&st) < 0) && fnew)
 		close(fd);
 
+	else if ((st.st_size == 0) && fnew)
+		close(fd);
+
 	if (ret < 0)
 		return AMGC_SYSTEM_ERROR(dctx);
 
+	else if (st.st_size == 0)
+		return AMGC_CUSTOM_ERROR(
+			dctx,AMGC_ERR_SOURCE_SIZE_ZERO);
+
 	map->size = st.st_size;
 	map->addr = mmap(0,map->size,prot,MAP_PRIVATE,fd,0);