diff --git a/audio/filters/echo.c b/audio/filters/echo.c
index 4d040a4c9d..320946c9c1 100644
--- a/audio/filters/echo.c
+++ b/audio/filters/echo.c
@@ -24,11 +24,13 @@
 
 // 4 source echo.
 
+#ifndef ALIGNED
 #ifdef __GNUC__
 #define ALIGNED __attribute__((aligned(16)))
 #else
 #define ALIGNED
 #endif
+#endif
 
 #ifndef min
 #define min(a, b) (((a) < (b)) ? (a) : (b))
diff --git a/audio/filters/iir.c b/audio/filters/iir.c
index d07ac9470e..cfcfef2df6 100644
--- a/audio/filters/iir.c
+++ b/audio/filters/iir.c
@@ -31,11 +31,13 @@
 #define M_PI		3.1415926535897932384626433832795
 #endif
 
+#ifndef ALIGNED
 #ifdef __GNUC__
 #define ALIGNED __attribute__((aligned(16)));
 #else
 #define ALIGNED
 #endif
+#endif
 
 #define sqr(a) ((a) * (a))