diff --git a/libavfilter/vf_lut3d.c b/libavfilter/vf_lut3d.c
index 9a92043a60..7fc5ec1567 100644
--- a/libavfilter/vf_lut3d.c
+++ b/libavfilter/vf_lut3d.c
@@ -410,60 +410,6 @@ static void set_identity_matrix(LUT3DContext *lut3d, int size)
     }
 }
 
-#if CONFIG_LUT3D_FILTER
-/* TODO: move to the CONFIG_LUT3D_FILTER definition scope at the bottom */
-static av_cold int lut3d_init(AVFilterContext *ctx)
-{
-    int ret;
-    FILE *f;
-    const char *ext;
-    LUT3DContext *lut3d = ctx->priv;
-
-    if (!lut3d->file) {
-        set_identity_matrix(lut3d, 32);
-        return 0;
-    }
-
-    f = fopen(lut3d->file, "r");
-    if (!f) {
-        ret = AVERROR(errno);
-        av_log(ctx, AV_LOG_ERROR, "%s: %s\n", lut3d->file, av_err2str(ret));
-        return ret;
-    }
-
-    ext = strrchr(lut3d->file, '.');
-    if (!ext) {
-        av_log(ctx, AV_LOG_ERROR, "Unable to guess the format from the extension\n");
-        ret = AVERROR_INVALIDDATA;
-        goto end;
-    }
-    ext++;
-
-    if (!av_strcasecmp(ext, "dat")) {
-        lut3d->lutsize = 33;
-        ret = parse_dat(ctx, f);
-    } else if (!av_strcasecmp(ext, "3dl")) {
-        ret = parse_3dl(ctx, f);
-    } else if (!av_strcasecmp(ext, "cube")) {
-        ret = parse_cube(ctx, f);
-    } else if (!av_strcasecmp(ext, "m3d")) {
-        ret = parse_m3d(ctx, f);
-    } else {
-        av_log(ctx, AV_LOG_ERROR, "Unrecognized '.%s' file type\n", ext);
-        ret = AVERROR(EINVAL);
-    }
-
-    if (!ret && !lut3d->lutsize) {
-        av_log(ctx, AV_LOG_ERROR, "3D LUT is empty\n");
-        ret = AVERROR_INVALIDDATA;
-    }
-
-end:
-    fclose(f);
-    return ret;
-}
-#endif
-
 static int query_formats(AVFilterContext *ctx)
 {
     static const enum AVPixelFormat pix_fmts[] = {
@@ -583,6 +529,57 @@ static const AVOption lut3d_options[] = {
 
 AVFILTER_DEFINE_CLASS(lut3d);
 
+static av_cold int lut3d_init(AVFilterContext *ctx)
+{
+    int ret;
+    FILE *f;
+    const char *ext;
+    LUT3DContext *lut3d = ctx->priv;
+
+    if (!lut3d->file) {
+        set_identity_matrix(lut3d, 32);
+        return 0;
+    }
+
+    f = fopen(lut3d->file, "r");
+    if (!f) {
+        ret = AVERROR(errno);
+        av_log(ctx, AV_LOG_ERROR, "%s: %s\n", lut3d->file, av_err2str(ret));
+        return ret;
+    }
+
+    ext = strrchr(lut3d->file, '.');
+    if (!ext) {
+        av_log(ctx, AV_LOG_ERROR, "Unable to guess the format from the extension\n");
+        ret = AVERROR_INVALIDDATA;
+        goto end;
+    }
+    ext++;
+
+    if (!av_strcasecmp(ext, "dat")) {
+        lut3d->lutsize = 33;
+        ret = parse_dat(ctx, f);
+    } else if (!av_strcasecmp(ext, "3dl")) {
+        ret = parse_3dl(ctx, f);
+    } else if (!av_strcasecmp(ext, "cube")) {
+        ret = parse_cube(ctx, f);
+    } else if (!av_strcasecmp(ext, "m3d")) {
+        ret = parse_m3d(ctx, f);
+    } else {
+        av_log(ctx, AV_LOG_ERROR, "Unrecognized '.%s' file type\n", ext);
+        ret = AVERROR(EINVAL);
+    }
+
+    if (!ret && !lut3d->lutsize) {
+        av_log(ctx, AV_LOG_ERROR, "3D LUT is empty\n");
+        ret = AVERROR_INVALIDDATA;
+    }
+
+end:
+    fclose(f);
+    return ret;
+}
+
 static const AVFilterPad lut3d_inputs[] = {
     {
         .name         = "default",