diff --git a/webrtc/modules/audio_processing/aec/aec_core.h b/webrtc/modules/audio_processing/aec/aec_core.h
index 9ac98a1c70..ae736113f4 100644
--- a/webrtc/modules/audio_processing/aec/aec_core.h
+++ b/webrtc/modules/audio_processing/aec/aec_core.h
@@ -55,15 +55,6 @@ typedef struct Stats {
 
 typedef struct AecCore AecCore;
 
-typedef void (*WebRtcAec_FilterFar_t)(AecCore* aec, float yf[2][PART_LEN1]);
-typedef void (*WebRtcAec_ScaleErrorSignal_t)
-    (AecCore* aec, float ef[2][PART_LEN1]);
-typedef void (*WebRtcAec_FilterAdaptation_t)
-    (AecCore* aec, float *fft, float ef[2][PART_LEN1]);
-typedef void (*WebRtcAec_OverdriveAndSuppress_t)
-    (AecCore* aec, float hNl[PART_LEN1], const float hNlFb,
-        float efw[2][PART_LEN1]);
-
 int WebRtcAec_CreateAec(AecCore** aec);
 int WebRtcAec_FreeAec(AecCore* aec);
 int WebRtcAec_InitAec(AecCore* aec, int sampFreq);
diff --git a/webrtc/modules/audio_processing/aec/aec_core_internal.h b/webrtc/modules/audio_processing/aec/aec_core_internal.h
index 279fb5c5f5..382f079252 100644
--- a/webrtc/modules/audio_processing/aec/aec_core_internal.h
+++ b/webrtc/modules/audio_processing/aec/aec_core_internal.h
@@ -117,9 +117,17 @@ struct AecCore {
 #endif
 };
 
+typedef void (*WebRtcAec_FilterFar_t)(AecCore* aec, float yf[2][PART_LEN1]);
 extern WebRtcAec_FilterFar_t WebRtcAec_FilterFar;
+typedef void (*WebRtcAec_ScaleErrorSignal_t)
+    (AecCore* aec, float ef[2][PART_LEN1]);
 extern WebRtcAec_ScaleErrorSignal_t WebRtcAec_ScaleErrorSignal;
+typedef void (*WebRtcAec_FilterAdaptation_t)
+    (AecCore* aec, float *fft, float ef[2][PART_LEN1]);
 extern WebRtcAec_FilterAdaptation_t WebRtcAec_FilterAdaptation;
+typedef void (*WebRtcAec_OverdriveAndSuppress_t)
+    (AecCore* aec, float hNl[PART_LEN1], const float hNlFb,
+        float efw[2][PART_LEN1]);
 extern WebRtcAec_OverdriveAndSuppress_t WebRtcAec_OverdriveAndSuppress;
 
 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_AEC_AEC_CORE_INTERNAL_H_