diff --git a/ref/gl/gl2_shim/gl2_shim.c b/ref/gl/gl2_shim/gl2_shim.c
index 19907561..988b8154 100644
--- a/ref/gl/gl2_shim/gl2_shim.c
+++ b/ref/gl/gl2_shim/gl2_shim.c
@@ -1401,7 +1401,7 @@ static unsigned int GL2_GetArrIdx( GLenum array )
 	case GL_COLOR_ARRAY:
 		return GL2_ATTR_COLOR;
 	case GL_TEXTURE_COORD_ARRAY:
-		ASSERT( gl2wrap_state.tmu < 2 );
+		Assert( gl2wrap_state.tmu < 2 );
 		return GL2_ATTR_TEXCOORD0 + gl2wrap_state.tmu;
 	}
 	return 0;
diff --git a/ref/gl/gl_context.c b/ref/gl/gl_context.c
index ab099b1a..db572995 100644
--- a/ref/gl/gl_context.c
+++ b/ref/gl/gl_context.c
@@ -135,7 +135,7 @@ static void Mod_UnloadTextures( model_t *mod )
 		Mod_SpriteUnloadTextures( mod->cache.data );
 		break;
 	default:
-		ASSERT( 0 );
+		Assert( 0 );
 		break;
 	}
 }
diff --git a/ref/gl/gl_image.c b/ref/gl/gl_image.c
index dfb9092f..d929a55c 100644
--- a/ref/gl/gl_image.c
+++ b/ref/gl/gl_image.c
@@ -46,7 +46,7 @@ acess to array elem
 */
 gl_texture_t *R_GetTexture( GLenum texnum )
 {
-	ASSERT( texnum >= 0 && texnum < MAX_TEXTURES );
+	Assert( texnum >= 0 && texnum < MAX_TEXTURES );
 	return &gl_textures[texnum];
 }
 
@@ -635,7 +635,7 @@ static void GL_SetTextureTarget( gl_texture_t *tex, rgbdata_t *pic )
 #if !XASH_GLES
 	if( pic->width > 1 && pic->height <= 1 )
 		tex->target = GL_TEXTURE_1D;
-	else 
+	else
 #endif // just skip first condition
 	if( FBitSet( pic->flags, IMAGE_CUBEMAP ))
 		tex->target = GL_TEXTURE_CUBE_MAP_ARB;
@@ -1458,7 +1458,7 @@ static void GL_DeleteTexture( gl_texture_t *tex )
 	gl_texture_t	**prev;
 	gl_texture_t	*cur;
 
-	ASSERT( tex != NULL );
+	Assert( tex != NULL );
 
 	// already freed?
 	if( !tex->texnum ) return;
diff --git a/ref/gl/gl_local.h b/ref/gl/gl_local.h
index 9acb1058..a648c849 100644
--- a/ref/gl/gl_local.h
+++ b/ref/gl/gl_local.h
@@ -53,7 +53,6 @@ void VGL_ShimEndFrame( void );
 #endif
 #endif
 
-#define ASSERT(x) if(!( x )) gEngfuncs.Host_Error( "assert failed at %s:%i\n", __FILE__, __LINE__ )
 #define Assert(x) if(!( x )) gEngfuncs.Host_Error( "assert failed at %s:%i\n", __FILE__, __LINE__ )
 
 #include <stdio.h>
diff --git a/ref/gl/gl_rsurf.c b/ref/gl/gl_rsurf.c
index 0a2f33f9..7f3991c7 100644
--- a/ref/gl/gl_rsurf.c
+++ b/ref/gl/gl_rsurf.c
@@ -2107,7 +2107,7 @@ void R_GenerateVBO( void )
 					pglBindBufferARB( GL_ARRAY_BUFFER_ARB, vbo->glindex );
 					pglBufferDataARB( GL_ARRAY_BUFFER_ARB, vbo->array_len * sizeof( vbovertex_t ), vbo->array, GL_STATIC_DRAW_ARB );
 
-					ASSERT( len == vbo->array_len );
+					Assert( len == vbo->array_len );
 
 					vbo = vbo->next;
 					vbotex = vbotex->next;
@@ -2146,7 +2146,7 @@ void R_GenerateVBO( void )
 			}
 		}
 	}
-	ASSERT( len == vbo->array_len );
+	Assert( len == vbo->array_len );
 
 	// upload last array
 	pglGenBuffersARB( 1, &vbo->glindex );
@@ -3180,7 +3180,7 @@ void R_DrawVBO( qboolean drawlightmap, qboolean drawtextures )
 			if( !vbotex->vboarray )
 				continue;
 
-			// ASSERT( vbotex->vboarray == vbo );
+			// Assert( vbotex->vboarray == vbo );
 			if( vbotex->vboarray != vbo )
 				continue;
 
@@ -3231,7 +3231,7 @@ void R_DrawVBO( qboolean drawlightmap, qboolean drawtextures )
 		if( !drawtextures || !drawlightmap )
 			vbos.decaldata->lm[k] = NULL;
 	}
-	// ASSERT( !vbo->next );
+	// Assert( !vbo->next );
 	R_ClearVBOState( drawlightmap, drawtextures );
 
 	mtst.details_enabled = false;