diff --git a/include/QF/GLSL/qf_alias.h b/include/QF/GLSL/qf_alias.h
index 88d776040..8989f7d05 100644
--- a/include/QF/GLSL/qf_alias.h
+++ b/include/QF/GLSL/qf_alias.h
@@ -33,7 +33,7 @@
 
 typedef struct aliasvrt_s {
 	byte        vertex[3];
-	byte        stn[3];
+	short       stn[3];
 } aliasvrt_t;
 
 void R_InitAlias (void);
diff --git a/libs/video/renderer/glsl/glsl_alias.c b/libs/video/renderer/glsl/glsl_alias.c
index 626c3799f..f134c46d8 100644
--- a/libs/video/renderer/glsl/glsl_alias.c
+++ b/libs/video/renderer/glsl/glsl_alias.c
@@ -204,10 +204,10 @@ R_DrawAlias (void)
 	qfglUniformMatrix4fv (quake_mdl.mvp_matrix.location, 1, false, mvp_mat);
 	qfglUniformMatrix3fv (quake_mdl.norm_matrix.location, 1, false, norm_mat);
 
-	qfglVertexAttribPointer (quake_mdl.vertex.location, 3, GL_BYTE,
+	qfglVertexAttribPointer (quake_mdl.vertex.location, 3, GL_UNSIGNED_BYTE,
 							 0, sizeof (aliasvrt_t),
 							 pose + field_offset (aliasvrt_t, vertex));
-	qfglVertexAttribPointer (quake_mdl.vertex.location, 3, GL_BYTE,
+	qfglVertexAttribPointer (quake_mdl.stn.location, 3, GL_SHORT,
 							 0, sizeof (aliasvrt_t),
 							 pose + field_offset (aliasvrt_t, stn));
 	qfglDrawElements (GL_TRIANGLES, hdr->mdl.numtris, GL_UNSIGNED_SHORT, 0);