diff --git a/apps/codecs/demac/libdemac/SOURCES b/apps/codecs/demac/libdemac/SOURCES
index 5a4482376c..f9f8f217c7 100644
--- a/apps/codecs/demac/libdemac/SOURCES
+++ b/apps/codecs/demac/libdemac/SOURCES
@@ -2,6 +2,7 @@ crc.c
 predictor.c
 #ifdef CPU_ARM
 predictor-arm.S
+udiv32_arm.S
 #elif defined CPU_COLDFIRE
 predictor-cf.S
 #endif
diff --git a/apps/codecs/demac/libdemac/demac_config.h b/apps/codecs/demac/libdemac/demac_config.h
index 13166f69ae..7388aa1059 100644
--- a/apps/codecs/demac/libdemac/demac_config.h
+++ b/apps/codecs/demac/libdemac/demac_config.h
@@ -91,10 +91,6 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
 
 /* Defaults */
 
-#ifndef UDIV32
-#define UDIV32(a, b) (a / b)
-#endif
-
 #ifndef FILTER_HISTORY_SIZE
 #define FILTER_HISTORY_SIZE 512
 #endif
@@ -109,6 +105,16 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
 
 
 #ifndef __ASSEMBLER__
+
+#if defined(CPU_ARM) && (ARM_ARCH < 5 || defined(USE_IRAM))
+/* optimised unsigned integer division for ARMv4, in IRAM */
+unsigned udiv32_arm(unsigned a, unsigned b);
+#define UDIV32(a, b) udiv32_arm(a, b)
+#else
+/* default */
+#define UDIV32(a, b) (a / b)
+#endif
+
 #include <inttypes.h>
 #if FILTER_BITS == 32
 typedef int32_t filter_int;
diff --git a/apps/codecs/lib/udiv32_arm.S b/apps/codecs/demac/libdemac/udiv32_arm.S
similarity index 100%
rename from apps/codecs/lib/udiv32_arm.S
rename to apps/codecs/demac/libdemac/udiv32_arm.S
diff --git a/apps/codecs/lib/SOURCES b/apps/codecs/lib/SOURCES
index a8c3feb1aa..42bb1138d1 100644
--- a/apps/codecs/lib/SOURCES
+++ b/apps/codecs/lib/SOURCES
@@ -7,7 +7,6 @@ mdct_lookup.c
 #ifdef CPU_ARM
 mdct_arm.S
 setjmp_arm.S
-udiv32_arm.S
 ../../../firmware/target/arm/support-arm.S
 #endif
 
diff --git a/apps/codecs/lib/codeclib.h b/apps/codecs/lib/codeclib.h
index 2d34523de5..6dda3e794c 100644
--- a/apps/codecs/lib/codeclib.h
+++ b/apps/codecs/lib/codeclib.h
@@ -65,15 +65,6 @@ void qsort(void *base, size_t nmemb, size_t size, int(*compar)(const void *, con
 
 extern void mdct_backward(int n, int32_t *in, int32_t *out);
 
-#if defined(CPU_ARM) && (ARM_ARCH < 5 || defined(USE_IRAM))
-/* optimised unsigned integer division for ARMv4, in IRAM */
-unsigned udiv32_arm(unsigned a, unsigned b);
-#define UDIV32(a, b) udiv32_arm(a, b)
-#else
-/* default */
-#define UDIV32(a, b) (a / b)
-#endif
-
 #if !defined(CPU_ARM) || ARM_ARCH < 5
 /* From libavutil/common.h */
 extern const uint8_t bs_log2_tab[256] ICONST_ATTR;