diff --git a/modules/cfe_testcase/src/sb_performance_test.c b/modules/cfe_testcase/src/sb_performance_test.c
index e56b1e09d..25f86ef44 100644
--- a/modules/cfe_testcase/src/sb_performance_test.c
+++ b/modules/cfe_testcase/src/sb_performance_test.c
@@ -138,7 +138,8 @@ void TestBulkTransmitRecv(void)
     CFE_PSP_GetTime(&ElapsedTime);
     ElapsedTime = OS_TimeSubtract(ElapsedTime, StartTime);
 
-    UtAssert_MIR("Elapsed time for SB bulk message test: %lu usec", OS_TimeGetTotalMicroseconds(ElapsedTime));
+    UtAssert_MIR("Elapsed time for SB bulk message test: %lu usec",
+                 (unsigned long)OS_TimeGetTotalMicroseconds(ElapsedTime));
 }
 
 void SBPerformanceTestSetup(void)