diff --git a/src/os2/window.cpp b/src/os2/window.cpp
index 989b173844..605a5ade87 100644
--- a/src/os2/window.cpp
+++ b/src/os2/window.cpp
@@ -1849,7 +1849,7 @@ void wxWindowOS2::GetTextExtent(
     int                             i;
     int                             l;
     FONTMETRICS                     vFM; // metrics structure
-    BOOL                            bRc;
+    BOOL                            bRc = FALSE;
     char*                           pStr;
     ERRORID                         vErrorCode; // last error id code
     HPS                             hPS;