diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index cdbd2edd6..aa646360d 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -8227,6 +8227,13 @@ void Tokenizer::simplifyEnum()
             if (tok->next()->str() == ":")
             {
                 tok = tok->next();
+
+                if (!tok->next())
+                {
+                    syntaxError(tok);
+                    return;
+                }
+
                 typeTokenStart = tok->next();
                 tok = tok->next();
                 typeTokenEnd = typeTokenStart;
diff --git a/test/testsimplifytokens.cpp b/test/testsimplifytokens.cpp
index 4789ae62c..c03d197d4 100644
--- a/test/testsimplifytokens.cpp
+++ b/test/testsimplifytokens.cpp
@@ -312,6 +312,7 @@ private:
         TEST_CASE(enum22); // ticket #2745
         TEST_CASE(enum23); // ticket #2804
         TEST_CASE(enum24); // ticket #2828
+        TEST_CASE(enum25); // ticket #2966
 
         // remove "std::" on some standard functions
         TEST_CASE(removestd);
@@ -6648,6 +6649,13 @@ private:
         ASSERT_EQUALS("", errout.str());
     }
 
+    void enum25() // ticket #2966 (segmentation fault)
+    {
+        const char code[] = "enum x :\n";
+        tok(code, false);
+        ASSERT_EQUALS("[test.cpp:1]: (error) syntax error\n", errout.str());
+    }
+
     void removestd()
     {
         ASSERT_EQUALS("; strcpy ( a , b ) ;", tok("; std::strcpy(a,b);"));