diff --git a/webrtc/modules/audio_processing/aec/aec_core.h b/webrtc/modules/audio_processing/aec/aec_core.h
index ae736113f4..638071735d 100644
--- a/webrtc/modules/audio_processing/aec/aec_core.h
+++ b/webrtc/modules/audio_processing/aec/aec_core.h
@@ -21,8 +21,6 @@
 #define PART_LEN 64  // Length of partition
 #define PART_LEN1 (PART_LEN + 1)  // Unique fft coefficients
 #define PART_LEN2 (PART_LEN * 2)  // Length of partition * 2
-#define NR_PART 12  // Number of partitions in filter.
-#define PREF_BAND_SIZE 24
 
 // Delay estimator constants, used for logging.
 enum { kMaxDelayBlocks = 60 };
diff --git a/webrtc/modules/audio_processing/aec/aec_core_internal.h b/webrtc/modules/audio_processing/aec/aec_core_internal.h
index 38049cf675..3b92bd609e 100644
--- a/webrtc/modules/audio_processing/aec/aec_core_internal.h
+++ b/webrtc/modules/audio_processing/aec/aec_core_internal.h
@@ -19,6 +19,9 @@
 #include "webrtc/modules/audio_processing/utility/ring_buffer.h"
 #include "webrtc/typedefs.h"
 
+#define NR_PART 12  // Number of partitions in filter.
+#define PREF_BAND_SIZE 24
+
 typedef struct PowerLevel {
   float sfrsum;
   int sfrcounter;