diff --git a/src/pc/gfx/gfx_opengl.c b/src/pc/gfx/gfx_opengl.c
index b085e5686..5a74fae1e 100644
--- a/src/pc/gfx/gfx_opengl.c
+++ b/src/pc/gfx/gfx_opengl.c
@@ -356,8 +356,8 @@ static struct ShaderProgram *gfx_opengl_create_and_load_new_shader(struct ColorC
         append_line(fs_buf, &fs_len, "    vec4 c2 = TEX_OFFSET(vec2(offset.x, offset.y - sign(offset.y)));");
         append_line(fs_buf, &fs_len, "    return c0 + abs(offset.x)*(c1-c0) + abs(offset.y)*(c2-c0);");
         append_line(fs_buf, &fs_len, "}");
-        append_line(fs_buf, &fs_len, "vec4 sampleTex(in sampler2D tex, in vec2 uv, in vec2 texSize, in bool dofilter, in int filter) {");
-        append_line(fs_buf, &fs_len, "    if (dofilter && filter == 2)");
+        append_line(fs_buf, &fs_len, "vec4 sampleTex(in sampler2D tex, in vec2 uv, in vec2 texSize, in bool dofilter, in int filterType) {");
+        append_line(fs_buf, &fs_len, "    if (dofilter && filterType == 2)");
         append_line(fs_buf, &fs_len, "        return filter3point(tex, uv, texSize);");
         append_line(fs_buf, &fs_len, "    else");
         append_line(fs_buf, &fs_len, "        return texture2D(tex, uv);");