diff --git a/driver/ldmd.cpp b/driver/ldmd.cpp
index a6089a8e..57f2d92d 100644
--- a/driver/ldmd.cpp
+++ b/driver/ldmd.cpp
@@ -126,7 +126,10 @@ static std::string prependMainExecutablePath(const std::string &ExeName,
 
   if (!Result.empty()) {
     sys::path::append(Result, ExeName);
-    sys::path::append(Result, getEXESuffix());
+
+    // Do not use path::append here, this is not a path component before which
+    // to insert the path seperator.
+    Result.append(getEXESuffix());
   }
 
   return Result.str();