diff --git a/libavcodec/synth_filter.c b/libavcodec/synth_filter.c
index 3df1a2a8a2..c54080a1e6 100644
--- a/libavcodec/synth_filter.c
+++ b/libavcodec/synth_filter.c
@@ -21,9 +21,9 @@
 #include "synth_filter.h"
 
 void ff_synth_filter_float(FFTContext *imdct,
-                         float *synth_buf_ptr, int *synth_buf_offset,
-                         float synth_buf2[32], const float window[512],
-                         float out[32], const float in[32], float scale, float bias)
+                           float *synth_buf_ptr, int *synth_buf_offset,
+                           float synth_buf2[32], const float window[512],
+                           float out[32], const float in[32], float scale, float bias)
 {
     float *synth_buf= synth_buf_ptr + *synth_buf_offset;
     int i, j;
diff --git a/libavcodec/synth_filter.h b/libavcodec/synth_filter.h
index 0472048fbc..8f1a8b4336 100644
--- a/libavcodec/synth_filter.h
+++ b/libavcodec/synth_filter.h
@@ -21,7 +21,7 @@
 #include "dsputil.h"
 
 void ff_synth_filter_float(FFTContext *imdct,
-                         float *synth_buf_ptr, int *synth_buf_offset,
-                         float synth_buf2[32], const float window[512],
-                         float out[32], const float in[32], float scale, float bias);
+                           float *synth_buf_ptr, int *synth_buf_offset,
+                           float synth_buf2[32], const float window[512],
+                           float out[32], const float in[32], float scale, float bias);