diff --git a/arch/arm/src/lc823450/lc823450_i2s.c b/arch/arm/src/lc823450/lc823450_i2s.c
index 7b3f2d770e..48af12ccb1 100644
--- a/arch/arm/src/lc823450/lc823450_i2s.c
+++ b/arch/arm/src/lc823450/lc823450_i2s.c
@@ -257,10 +257,10 @@ extern unsigned int XT1OSC_CLK;
 
 static void _setup_audio_pll(uint32_t freq)
 {
-  DEBUGASSERT(24000000 == XT1OSC_CLK);
+  uint32_t m = 0;
+  uint32_t n = 0;
 
-  uint32_t m;
-  uint32_t n;
+  DEBUGASSERT(24000000 == XT1OSC_CLK);
 
   switch (freq)
     {