diff --git a/libavcodec/acelp_vectors.c b/libavcodec/acelp_vectors.c
index 736987bbb8..a25011f4ff 100644
--- a/libavcodec/acelp_vectors.c
+++ b/libavcodec/acelp_vectors.c
@@ -207,8 +207,8 @@ void ff_weighted_vector_sumf(float *out, const float *in_a, const float *in_b,
                + weight_coeff_b * in_b[i];
 }
 
-void ff_adaptative_gain_control(float *buf_out, float speech_energ,
-                                int size, float alpha, float *gain_mem)
+void ff_adaptive_gain_control(float *buf_out, float speech_energ,
+                              int size, float alpha, float *gain_mem)
 {
     int i;
     float postfilter_energ = ff_dot_productf(buf_out, buf_out, size);
diff --git a/libavcodec/acelp_vectors.h b/libavcodec/acelp_vectors.h
index 2cc5f36649..3e6652f377 100644
--- a/libavcodec/acelp_vectors.h
+++ b/libavcodec/acelp_vectors.h
@@ -212,7 +212,7 @@ void ff_weighted_vector_sumf(float *out, const float *in_a, const float *in_b,
                              int length);
 
 /**
- * Adaptative gain control (as used in AMR postfiltering)
+ * Adaptive gain control (as used in AMR postfiltering)
  *
  * @param buf_out the input speech buffer
  * @param speech_energ input energy
@@ -220,8 +220,8 @@ void ff_weighted_vector_sumf(float *out, const float *in_a, const float *in_b,
  * @param alpha exponential filter factor
  * @param gain_mem a pointer to the filter memory (single float of size)
  */
-void ff_adaptative_gain_control(float *buf_out, float speech_energ,
-                                int size, float alpha, float *gain_mem);
+void ff_adaptive_gain_control(float *buf_out, float speech_energ,
+                              int size, float alpha, float *gain_mem);
 
 /**
  * Set the sum of squares of a signal by scaling
diff --git a/libavcodec/amrnbdec.c b/libavcodec/amrnbdec.c
index 325acfda78..e5a82b493a 100644
--- a/libavcodec/amrnbdec.c
+++ b/libavcodec/amrnbdec.c
@@ -943,8 +943,8 @@ static void postfilter(AMRContext *p, float *lpc, float *buf_out)
     ff_tilt_compensation(&p->tilt_mem, tilt_factor(lpc_n, lpc_d), buf_out,
                          AMR_SUBFRAME_SIZE);
 
-    ff_adaptative_gain_control(buf_out, speech_gain, AMR_SUBFRAME_SIZE,
-                               AMR_AGC_ALPHA, &p->postfilter_agc);
+    ff_adaptive_gain_control(buf_out, speech_gain, AMR_SUBFRAME_SIZE,
+                             AMR_AGC_ALPHA, &p->postfilter_agc);
 }
 
 /// @}
diff --git a/libavcodec/sipr.c b/libavcodec/sipr.c
index ada2fe91ea..d2ce9c7897 100644
--- a/libavcodec/sipr.c
+++ b/libavcodec/sipr.c
@@ -254,7 +254,7 @@ static void sipr_decode_lp(float *lsfnew, const float *lsfold, float *Az,
 }
 
 /**
- * Evaluates the adaptative impulse response.
+ * Evaluates the adaptive impulse response.
  */
 static void eval_ir(const float *Az, int pitch_lag, float *freq,
                     float pitch_sharp_factor)
@@ -479,8 +479,8 @@ static void decode_frame(SiprContext *ctx, SiprParameters *params,
             float energy = ff_dot_productf(ctx->postfilter_syn5k0 + LP_FILTER_ORDER + i*SUBFR_SIZE,
                                            ctx->postfilter_syn5k0 + LP_FILTER_ORDER + i*SUBFR_SIZE,
                                            SUBFR_SIZE);
-            ff_adaptative_gain_control(&synth[i * SUBFR_SIZE], energy,
-                                       SUBFR_SIZE, 0.9, &ctx->postfilter_agc);
+            ff_adaptive_gain_control(&synth[i * SUBFR_SIZE], energy,
+                                     SUBFR_SIZE, 0.9, &ctx->postfilter_agc);
         }
 
         memcpy(ctx->postfilter_syn5k0, ctx->postfilter_syn5k0 + frame_size,