diff --git a/lib/token.cpp b/lib/token.cpp
index 42097422e..cda6b018f 100644
--- a/lib/token.cpp
+++ b/lib/token.cpp
@@ -224,13 +224,39 @@ Token *Token::tokAt(int index)
 const Token *Token::linkAt(int index) const
 {
     const Token *tok = this->tokAt(index);
-    return tok->link();
+    if (!tok) {
+        std::list<ErrorLogger::ErrorMessage::FileLocation> locationList;
+        ErrorLogger::ErrorMessage::FileLocation loc;
+        loc.setfile("");
+        loc.line = this->linenr();
+        locationList.push_back(loc);
+        const ErrorLogger::ErrorMessage errmsg(locationList,
+                                               Severity::error,
+                                               "Internal error. Token::linkAt called with index outside the tokens range.",
+                                               "cppcheckError",
+                                               false);
+        Check::reportError(errmsg);
+    }
+    return tok ? tok->link() : 0;
 }
 
 Token *Token::linkAt(int index)
 {
     Token *tok = this->tokAt(index);
-    return tok->link();
+    if (!tok) {
+        std::list<ErrorLogger::ErrorMessage::FileLocation> locationList;
+        ErrorLogger::ErrorMessage::FileLocation loc;
+        loc.setfile("");
+        loc.line = this->linenr();
+        locationList.push_back(loc);
+        const ErrorLogger::ErrorMessage errmsg(locationList,
+                                               Severity::error,
+                                               "Internal error. Token::linkAt called with index outside the tokens range.",
+                                               "cppcheckError",
+                                               false);
+        Check::reportError(errmsg);
+    }
+    return tok ? tok->link() : 0;
 }
 
 const std::string &Token::strAt(int index) const