1 files changed, 3 insertions, 3 deletions
diff --git a/cpp/src/slice2rb/Main.cpp b/cpp/src/slice2rb/Main.cpp
index 47867199325..6a6c7fa5e53 100644
--- a/cpp/src/slice2rb/Main.cpp
+++ b/cpp/src/slice2rb/Main.cpp
@@ -97,19 +97,19 @@ main(int argc, char* argv[])
     vector<string>::const_iterator i;
     for(i = optargs.begin(); i != optargs.end(); ++i)
     {
-        cppArgs += " -D" + *i;
+	cppArgs += " -D" + Preprocessor::addQuotes(*i);
     }
 
     optargs = opts.argVec("U");
     for(i = optargs.begin(); i != optargs.end(); ++i)
     {
-        cppArgs += " -U" + *i;
+	cppArgs += " -U" + Preprocessor::addQuotes(*i);
     }
 
     vector<string> includePaths = opts.argVec("I");
     for(i = includePaths.begin(); i != includePaths.end(); ++i)
     {
-        cppArgs += " -I" + *i;
+	cppArgs += " -I" + Preprocessor::normalizeIncludePath(*i);
     }
 
     bool preprocess = opts.isSet("E");