diff --git a/spa/plugins/filter-graph/convolver.c b/spa/plugins/filter-graph/convolver.c
index b3de7b314..dc66a2794 100644
--- a/spa/plugins/filter-graph/convolver.c
+++ b/spa/plugins/filter-graph/convolver.c
@@ -6,7 +6,6 @@
 
 #include "convolver.h"
 
-#include <math.h>
 #include <math.h>
 #include <pthread.h>
 #include <semaphore.h>
@@ -27,7 +26,6 @@ struct partition {
 	int time_size;
 	int freq_size;
 	void *fft;
-	void *ifft;
 	float *freq;
 
 	int n_segments;
@@ -44,7 +42,6 @@ struct partition {
 struct convolver
 {
 	struct spa_fga_dsp *dsp;
-	struct convolver *conv;
 
 	int min_size;
 	int max_size;
@@ -114,8 +111,6 @@ static void partition_free(struct spa_fga_dsp *dsp, struct partition *part)
 	}
 	if (part->fft)
 		spa_fga_dsp_fft_free(dsp, part->fft);
-	if (part->ifft)
-		spa_fga_dsp_fft_free(dsp, part->ifft);
 	free(part->segments);
 	free(part->ir);
 	spa_fga_dsp_fft_memfree(dsp, part->freq);
@@ -147,9 +142,6 @@ static struct partition *partition_new(struct convolver *conv, int block,
 	part->fft = spa_fga_dsp_fft_new(dsp, part->time_size, true);
 	if (part->fft == NULL)
 		goto error;
-	part->ifft = spa_fga_dsp_fft_new(dsp, part->time_size, true);
-	if (part->ifft == NULL)
-		goto error;
 
 	part->segments = calloc(part->n_segments, sizeof(float*));
 	part->freq = spa_fga_dsp_fft_memalloc(dsp, part->freq_size, false);
@@ -228,7 +220,7 @@ static int partition_run(struct spa_fga_dsp *dsp, struct partition *part, const
 					r->segments[j],
 					part->freq_size);
 		}
-		spa_fga_dsp_fft_run(dsp, part->ifft, -1, part->freq, r->time_buffer[idx]);
+		spa_fga_dsp_fft_run(dsp, part->fft, -1, part->freq, r->time_buffer[idx]);
 
 		dst = output ? output[i]: r->precalc[pc_idx];
 		if (dst)