diff --git a/src/pre.l b/src/pre.l
index 7865966f39a..92912e618bb 100644
--- a/src/pre.l
+++ b/src/pre.l
@@ -2465,7 +2465,7 @@ CHARLIT   (("'"\\[0-7]{1,3}"'")|("'"\\."'")|("'"[^'\\\n]{1,4}"'"))
                                             BEGIN(SkipVerbatim);
                                           }
                                         }
-<SkipCComment>"```"[~]*                 {
+<SkipCComment>"```"[`]*                 {
                                           static bool markdownSupport = Config_getBool("MARKDOWN_SUPPORT");
                                           if (!markdownSupport)
                                           {
@@ -2619,7 +2619,7 @@ CHARLIT   (("'"\\[0-7]{1,3}"'")|("'"\\."'")|("'"[^'\\\n]{1,4}"'"))
                                             BEGIN(SkipCComment);
                                           }
                                         }
-<SkipVerbatim>"```"[~]*                 {
+<SkipVerbatim>"```"[`]*                 {
   					  outputArray(yytext,(int)yyleng);
                                           if (g_fenceSize==yyleng)
                                           {
diff --git a/src/scanner.l b/src/scanner.l
index b9243c9b4ea..c309289f640 100644
--- a/src/scanner.l
+++ b/src/scanner.l
@@ -6271,7 +6271,7 @@ OPERATOR  "operator"{B}*({ARITHOP}|{ASSIGNOP}|{LOGICOP}|{BITOP})
                                           g_nestedComment=FALSE;
                                           BEGIN(DocCopyBlock);
                                         }
-<DocBlock>"```"[~]*                     {
+<DocBlock>"```"[`]*                     {
                                           docBlock+=yytext;
                                           docBlockName="```";
                                           g_fencedSize=yyleng;
@@ -6396,7 +6396,7 @@ OPERATOR  "operator"{B}*({ARITHOP}|{ASSIGNOP}|{LOGICOP}|{BITOP})
                                             BEGIN(DocBlock);
                                           }
                                         }
-<DocCopyBlock>"```"[~]*                 {
+<DocCopyBlock>"```"[`]*                 {
                                           docBlock+=yytext;
                                           if (g_fencedSize==yyleng)
                                           {