diff --git a/rpcs3/Emu/RSX/Program/program_util.h b/rpcs3/Emu/RSX/Program/program_util.h
index 32ad3b1c48..11a005c13a 100644
--- a/rpcs3/Emu/RSX/Program/program_util.h
+++ b/rpcs3/Emu/RSX/Program/program_util.h
@@ -60,9 +60,9 @@ namespace rsx
 
 	struct VertexProgramBase
 	{
-		u32 id;
+		u32 id = 0;
 		std::vector<u16> constant_ids;
-		bool has_indexed_constants;
+		bool has_indexed_constants = false;
 
 		// Translates an incoming range of constants against our mapping.
 		// If there is no linear mapping available, return -1, otherwise returns the translated index of the first slot