diff --git a/Source/CTest/cmCTestMemCheckHandler.cxx b/Source/CTest/cmCTestMemCheckHandler.cxx
index 06124491a..f0a98f9fd 100644
--- a/Source/CTest/cmCTestMemCheckHandler.cxx
+++ b/Source/CTest/cmCTestMemCheckHandler.cxx
@@ -672,30 +672,30 @@ bool cmCTestMemCheckHandler::ProcessMemCheckValgrindOutput(
   cmsys::RegularExpression vgFMM(
     "== .*Mismatched free\\(\\) / delete / delete \\[\\]");
   cmsys::RegularExpression vgMLK1(
-    "== .*[0-9][0-9]* bytes in [0-9][0-9]* blocks are definitely lost"
-   " in loss record [0-9][0-9]* of [0-9]");
+    "== .*[0-9,]+ bytes in [0-9,]+ blocks are definitely lost"
+   " in loss record [0-9,]+ of [0-9,]+");
   cmsys::RegularExpression vgMLK2(
-    "== .*[0-9][0-9]* \\([0-9]*,?[0-9]* direct, [0-9]*,?[0-9]* indirect\\)"
-        " bytes in [0-9][0-9]* blocks are definitely lost"
-    " in loss record [0-9][0-9]* of [0-9]");
+    "== .*[0-9,]+ \\([0-9,]+ direct, [0-9,]+ indirect\\)"
+    " bytes in [0-9,]+ blocks are definitely lost"
+    " in loss record [0-9,]+ of [0-9,]+");
   cmsys::RegularExpression vgPAR(
     "== .*Syscall param .* contains unaddressable byte\\(s\\)");
   cmsys::RegularExpression vgMPK1(
-    "== .*[0-9][0-9]* bytes in [0-9][0-9]* blocks are possibly lost in"
-    " loss record [0-9][0-9]* of [0-9]");
+    "== .*[0-9,]+ bytes in [0-9,]+ blocks are possibly lost in"
+    " loss record [0-9,]+ of [0-9,]+");
   cmsys::RegularExpression vgMPK2(
-    "== .*[0-9][0-9]* bytes in [0-9][0-9]* blocks are still reachable"
-    " in loss record [0-9][0-9]* of [0-9]");
+    "== .*[0-9,]+ bytes in [0-9,]+ blocks are still reachable"
+    " in loss record [0-9,]+ of [0-9,]+");
   cmsys::RegularExpression vgUMC(
     "== .*Conditional jump or move depends on uninitialised value\\(s\\)");
   cmsys::RegularExpression vgUMR1(
-    "== .*Use of uninitialised value of size [0-9][0-9]*");
-  cmsys::RegularExpression vgUMR2("== .*Invalid read of size [0-9][0-9]*");
+    "== .*Use of uninitialised value of size [0-9,]+");
+  cmsys::RegularExpression vgUMR2("== .*Invalid read of size [0-9,]+");
   cmsys::RegularExpression vgUMR3("== .*Jump to the invalid address ");
   cmsys::RegularExpression vgUMR4("== .*Syscall param .* contains "
     "uninitialised or unaddressable byte\\(s\\)");
   cmsys::RegularExpression vgUMR5("== .*Syscall param .* uninitialised");
-  cmsys::RegularExpression vgIPW("== .*Invalid write of size [0-9]");
+  cmsys::RegularExpression vgIPW("== .*Invalid write of size [0-9,]+");
   cmsys::RegularExpression vgABR("== .*pthread_mutex_unlock: mutex is "
     "locked by a different thread");
   std::vector<std::string::size_type> nonValGrindOutput;