diff --git a/src/video_core/host_shaders/astc_decoder.comp b/src/video_core/host_shaders/astc_decoder.comp
index ca93dc2a2..fd38dcfe5 100644
--- a/src/video_core/host_shaders/astc_decoder.comp
+++ b/src/video_core/host_shaders/astc_decoder.comp
@@ -88,7 +88,7 @@ int color_bitsread = 0;
 #define VECTOR_ARRAY_SIZE DIVCEIL(ARRAY_NUM_ELEMENTS * 2, 4)
 uvec4 result_vector[VECTOR_ARRAY_SIZE];
 
-int result_index = 0;
+uint result_index = 0;
 uint result_vector_max_index;
 bool result_limit_reached = false;