diff --git a/webrtc/modules/audio_processing/aec/aec_core.h b/webrtc/modules/audio_processing/aec/aec_core.h
index 9f302b79f9..327a5a9126 100644
--- a/webrtc/modules/audio_processing/aec/aec_core.h
+++ b/webrtc/modules/audio_processing/aec/aec_core.h
@@ -22,17 +22,6 @@
 #define PART_LEN1 (PART_LEN + 1)  // Unique fft coefficients
 #define PART_LEN2 (PART_LEN * 2)  // Length of partition * 2
 
-// Delay estimator constants, used for logging.
-enum {
-  kMaxDelayBlocks = 60
-};
-enum {
-  kLookaheadBlocks = 15
-};
-enum {
-  kHistorySizeBlocks = kMaxDelayBlocks + kLookaheadBlocks
-};
-
 typedef float complex_t[2];
 // For performance reasons, some arrays of complex numbers are replaced by twice
 // as long arrays of float, all the real parts followed by all the imaginary
diff --git a/webrtc/modules/audio_processing/aec/aec_core_internal.h b/webrtc/modules/audio_processing/aec/aec_core_internal.h
index ba7cd347f3..1c560f91c9 100644
--- a/webrtc/modules/audio_processing/aec/aec_core_internal.h
+++ b/webrtc/modules/audio_processing/aec/aec_core_internal.h
@@ -26,6 +26,17 @@ enum {
 };
 static const int kNormalNumPartitions = 12;
 
+// Delay estimator constants, used for logging.
+enum {
+  kMaxDelayBlocks = 60
+};
+enum {
+  kLookaheadBlocks = 15
+};
+enum {
+  kHistorySizeBlocks = kMaxDelayBlocks + kLookaheadBlocks
+};
+
 // Extended filter adaptation parameters.
 // TODO(ajm): No narrowband tuning yet.
 static const float kExtendedMu = 0.4f;