diff --git a/source/shared_lib/sources/graphics/JPGReader.cpp b/source/shared_lib/sources/graphics/JPGReader.cpp
index 479b75a9b..bcbac6674 100644
--- a/source/shared_lib/sources/graphics/JPGReader.cpp
+++ b/source/shared_lib/sources/graphics/JPGReader.cpp
@@ -37,7 +37,7 @@ static void init_source(j_decompress_ptr cinfo) {
 }
 static boolean fill_input_buffer (j_decompress_ptr cinfo) {
 	//it is already filled
-	return true;
+	return boolean(true);
 }
 static void skip_input_data (j_decompress_ptr cinfo, long num_bytes) {
 	if (num_bytes > 0) {