diff --git a/components/heap/heap_tlsf.c b/components/heap/heap_tlsf.c
index 1fdcfad0a3..010eceda5f 100644
--- a/components/heap/heap_tlsf.c
+++ b/components/heap/heap_tlsf.c
@@ -57,30 +57,6 @@
 ** NOTE: TLSF spec relies on ffs/fls returning value 0..31.
 ** ffs/fls return 1-32 by default, returning 0 for error.
 */
-
-/* The TLSF control structure. */
-typedef struct control_t
-{
-	/* Empty lists point at this block to indicate they are free. */
-	block_header_t block_null;
-
-	/* Local parameter for the pool */
-	unsigned int fl_index_count;
-	unsigned int fl_index_shift;
-	unsigned int fl_index_max;
-	unsigned int sl_index_count;
-	unsigned int sl_index_count_log2;
-	unsigned int small_block_size;
-	size_t size;
-
-	/* Bitmaps for free lists. */
-	unsigned int fl_bitmap;
-	unsigned int *sl_bitmap;
-
-	/* Head of free lists. */
-	block_header_t** blocks;
-} control_t;
-
 static inline __attribute__((__always_inline__)) int tlsf_ffs(unsigned int word)
 {
 	const unsigned int reverse = word & (~word + 1);
diff --git a/components/heap/heap_tlsf.h b/components/heap/heap_tlsf.h
index b2f94a6221..c140269ac6 100644
--- a/components/heap/heap_tlsf.h
+++ b/components/heap/heap_tlsf.h
@@ -72,6 +72,29 @@ typedef struct block_header_t
 	struct block_header_t* prev_free;
 } block_header_t;
 
+/* The TLSF control structure. */
+typedef struct control_t
+{
+	/* Empty lists point at this block to indicate they are free. */
+	block_header_t block_null;
+
+	/* Local parameter for the pool */
+	unsigned int fl_index_count;
+	unsigned int fl_index_shift;
+	unsigned int fl_index_max;
+	unsigned int sl_index_count;
+	unsigned int sl_index_count_log2;
+	unsigned int small_block_size;
+	size_t size;
+
+	/* Bitmaps for free lists. */
+	unsigned int fl_bitmap;
+	unsigned int *sl_bitmap;
+
+	/* Head of free lists. */
+	block_header_t** blocks;
+} control_t;
+
 #include "heap_tlsf_block_functions.h"
 
 /* tlsf_t: a TLSF structure. Can contain 1 to N pools. */