diff --git a/webrtc/common_audio/ring_buffer.c b/webrtc/common_audio/ring_buffer.c
index 60fb5dff20..5fc653bd57 100644
--- a/webrtc/common_audio/ring_buffer.c
+++ b/webrtc/common_audio/ring_buffer.c
@@ -17,20 +17,6 @@
 #include <stdlib.h>
 #include <string.h>
 
-enum Wrap {
-  SAME_WRAP,
-  DIFF_WRAP
-};
-
-struct RingBuffer {
-  size_t read_pos;
-  size_t write_pos;
-  size_t element_count;
-  size_t element_size;
-  enum Wrap rw_wrap;
-  char* data;
-};
-
 // Get address of region(s) from which we can read data.
 // If the region is contiguous, |data_ptr_bytes_2| will be zero.
 // If non-contiguous, |data_ptr_bytes_2| will be the size in bytes of the second
diff --git a/webrtc/common_audio/ring_buffer.h b/webrtc/common_audio/ring_buffer.h
index 4125c48d01..74951a8b2d 100644
--- a/webrtc/common_audio/ring_buffer.h
+++ b/webrtc/common_audio/ring_buffer.h
@@ -20,7 +20,16 @@ extern "C" {
 
 #include <stddef.h>  // size_t
 
-typedef struct RingBuffer RingBuffer;
+enum Wrap { SAME_WRAP, DIFF_WRAP };
+
+typedef struct RingBuffer {
+  size_t read_pos;
+  size_t write_pos;
+  size_t element_count;
+  size_t element_size;
+  enum Wrap rw_wrap;
+  char* data;
+} RingBuffer;
 
 // Creates and initializes the buffer. Returns NULL on failure.
 RingBuffer* WebRtc_CreateBuffer(size_t element_count, size_t element_size);