diff --git a/clang/include/clang/Basic/DiagnosticFrontendKinds.td b/clang/include/clang/Basic/DiagnosticFrontendKinds.td
index 080c7381b545..c041a4bff294 100644
--- a/clang/include/clang/Basic/DiagnosticFrontendKinds.td
+++ b/clang/include/clang/Basic/DiagnosticFrontendKinds.td
@@ -46,8 +46,8 @@ def remark_fe_backend_optimization_remark_missed : Remark<"%0">, BackendInfo,
 def remark_fe_backend_optimization_remark_analysis : Remark<"%0">, BackendInfo,
     InGroup<BackendOptimizationRemarkAnalysis>;
 def remark_fe_backend_optimization_remark_analysis_fpcommute : Remark<"%0; "
-    "allow commutativity by specifying ‘#pragma clang loop vectorize(enable)’ "
-    "before the loop or by providing the compiler option ‘-ffast-math’">,
+    "allow commutativity by specifying '#pragma clang loop vectorize(enable)' "
+    "before the loop or by providing the compiler option '-ffast-math'">,
     BackendInfo, InGroup<BackendOptimizationRemarkAnalysis>;
 def warn_fe_backend_optimization_failure : Warning<"%0">, BackendInfo,
     InGroup<BackendOptimizationFailure>, DefaultWarn;
diff --git a/clang/test/Frontend/optimization-remark-options.c b/clang/test/Frontend/optimization-remark-options.c
index 33cc9e015a8f..2b22099c100e 100644
--- a/clang/test/Frontend/optimization-remark-options.c
+++ b/clang/test/Frontend/optimization-remark-options.c
@@ -1,6 +1,6 @@
 // RUN: %clang -O1 -fvectorize -Rpass-analysis=loop-vectorize -emit-llvm -S %s -o - 2>&1 | FileCheck %s
 
-// CHECK: {{.*}}:9:11: remark: loop not vectorized: vectorization requires changes in the order of operations, however IEEE 754 floating-point operations are not commutative; allow commutativity by specifying ‘#pragma clang loop vectorize(enable)’ before the loop or by providing the compiler option ‘-ffast-math’
+// CHECK: {{.*}}:9:11: remark: loop not vectorized: vectorization requires changes in the order of operations, however IEEE 754 floating-point operations are not commutative; allow commutativity by specifying '#pragma clang loop vectorize(enable)' before the loop or by providing the compiler option '-ffast-math'
 
 double foo(int N) {
   double v = 0.0;