diff --git a/engine/client/cl_parse_gs.c b/engine/client/cl_parse_gs.c
index d625341e..9c3db4c3 100644
--- a/engine/client/cl_parse_gs.c
+++ b/engine/client/cl_parse_gs.c
@@ -91,11 +91,11 @@ static void CL_ParseNewMovevars( sizebuf_t *msg )
 
 typedef struct delta_header_t
 {
-	qboolean remove : 1;
-	qboolean custom : 1;
-	qboolean instanced : 1;
-	uint instanced_baseline_index : 6;
-	uint offset : 6;
+	qboolean remove;
+	qboolean custom;
+	qboolean instanced;
+	uint16_t instanced_baseline_index;
+	uint16_t offset;
 } delta_header_t;
 
 static int CL_ParseDeltaHeader( sizebuf_t *msg, qboolean delta, int oldnum, struct delta_header_t *hdr )