diff --git a/tests/rsqrt_test.cpp b/tests/rsqrt_test.cpp
index 911b2030..735aefc9 100644
--- a/tests/rsqrt_test.cpp
+++ b/tests/rsqrt_test.cpp
@@ -27,6 +27,9 @@ extern "C" u32 rsqrt_fallback(u32 value) {
     FP::FPSR fpsr;
     return FP::FPRSqrtEstimate(value, fpcr, fpsr);
 }
+extern "C" u32 _rsqrt_fallback(u32 value) {
+    return rsqrt_fallback(value);
+}
 
 void Test(u32 value) {
     FP::FPCR fpcr;
diff --git a/tests/rsqrt_test_fn.s b/tests/rsqrt_test_fn.s
index 8e985917..fa8dadee 100644
--- a/tests/rsqrt_test_fn.s
+++ b/tests/rsqrt_test_fn.s
@@ -17,7 +17,7 @@
 .global _rsqrt_fallback
 
 .text
-.intel_syntax
+.intel_syntax noprefix
 
 .align 16
 min_pos_denorm: