1 files changed, 3 insertions, 2 deletions
diff --git a/apt-pkg/contrib/cmndline.cc b/apt-pkg/contrib/cmndline.cc
index 159f330a1..b8c7f7984 100644
--- a/apt-pkg/contrib/cmndline.cc
+++ b/apt-pkg/contrib/cmndline.cc
@@ -92,8 +92,9 @@ bool CommandLine::Parse(int argc,const char **argv)
       // Match up to a = against the list
       Args *A;
       const char *OptEnd = strchrnul(Opt, '=');
-      for (A = ArgList; A->end() == false && 
-	   stringcasecmp(Opt,OptEnd,A->LongOpt) != 0; A++);
+      for (A = ArgList; A->end() == false &&
+	   (A->LongOpt == 0 || stringcasecmp(Opt,OptEnd,A->LongOpt) != 0);
+	   ++A);
       
       // Failed, look for a word after the first - (no-foo)
       bool PreceedMatch = false;