diff --git a/libopenjpeg/j2k.c b/libopenjpeg/j2k.c
index b93d37ef..5166ce8f 100644
--- a/libopenjpeg/j2k.c
+++ b/libopenjpeg/j2k.c
@@ -7673,25 +7673,6 @@ void j2k_destroy_decompress(opj_j2k_t *j2k) {
 	opj_free(j2k);
 }
 
-void j2k_setup_decoder(opj_j2k_t *j2k, opj_dparameters_t *parameters) {
-	if(j2k && parameters) {
-		/* create and initialize the coding parameters structure */
-		opj_cp_t *cp = (opj_cp_t*) opj_calloc(1, sizeof(opj_cp_t));
-		cp->reduce = parameters->cp_reduce;	
-		cp->layer = parameters->cp_layer;
-		cp->limit_decoding = parameters->cp_limit_decoding;
-
-#ifdef USE_JPWL
-		cp->correct = parameters->jpwl_correct;
-		cp->exp_comps = parameters->jpwl_exp_comps;
-		cp->max_tiles = parameters->jpwl_max_tiles;
-#endif /* USE_JPWL */
-
-
-		/* keep a link to cp so that we can destroy it later in j2k_destroy_decompress */
-		j2k->cp = cp;
-	}
-}
 
 void j2k_setup_decoder_v2(opj_j2k_v2_t *j2k, opj_dparameters_t *parameters)
 {
diff --git a/libopenjpeg/j2k.h b/libopenjpeg/j2k.h
index 6b7d9365..28d13974 100644
--- a/libopenjpeg/j2k.h
+++ b/libopenjpeg/j2k.h
@@ -790,8 +790,6 @@ Decoding parameters are returned in j2k->cp.
 @param j2k J2K decompressor handle
 @param parameters decompression parameters
 */
-void j2k_setup_decoder(opj_j2k_t *j2k, opj_dparameters_t *parameters);
-
 void j2k_setup_decoder_v2(opj_j2k_v2_t *j2k, opj_dparameters_t *parameters);
 
 /**