diff --git a/src/lib_ccx/ccx_encoders_common.h b/src/lib_ccx/ccx_encoders_common.h
index ce8a0176..5c585f3a 100644
--- a/src/lib_ccx/ccx_encoders_common.h
+++ b/src/lib_ccx/ccx_encoders_common.h
@@ -229,5 +229,6 @@ unsigned int get_color_encoded(struct encoder_ctx *ctx, unsigned char *buffer, i
 unsigned int get_font_encoded(struct encoder_ctx *ctx, unsigned char *buffer, int line_num, struct eia608_screen *data);
 int pass_cc_buffer_to_python(struct eia608_screen *data, struct encoder_ctx *context);
 
+struct lib_ccx_ctx;
 void switch_output_file(struct lib_ccx_ctx *ctx, struct encoder_ctx *enc_ctx, int track_id);
 #endif