diff --git a/libclc/generic/lib/math/nan.inc b/libclc/generic/lib/math/nan.inc
index f6508c3ab521c..7f081ff6314ef 100644
--- a/libclc/generic/lib/math/nan.inc
+++ b/libclc/generic/lib/math/nan.inc
@@ -5,7 +5,7 @@
 #if __CLC_FPSIZE == 64
 _CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE nan(__CLC_XCONCAT(ulong, __CLC_VECSIZE) code)
 {
-	return __CLC_AS_GENTYPE(code | 0x7ff0000000000000ul);
+	return __CLC_AS_GENTYPE(code | 0x7ff8000000000000ul);
 }
 #elif __CLC_FPSIZE == 32
 _CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE nan(__CLC_XCONCAT(uint, __CLC_VECSIZE) code)
diff --git a/libclc/generic/libspirv/math/nan.inc b/libclc/generic/libspirv/math/nan.inc
index d778a82bca519..492db1ee94944 100644
--- a/libclc/generic/libspirv/math/nan.inc
+++ b/libclc/generic/libspirv/math/nan.inc
@@ -12,7 +12,7 @@
 #if __CLC_FPSIZE == 64
 _CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE
 __spirv_ocl_nan(__CLC_XCONCAT(ulong, __CLC_VECSIZE) code) {
-  return __CLC_AS_GENTYPE(code | 0x7ff0000000000000ul);
+  return __CLC_AS_GENTYPE(code | 0x7ff8000000000000ul);
 }
 _CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE
 __spirv_ocl_nan(__CLC_XCONCAT(long, __CLC_VECSIZE) code) {