diff --git a/dlls/ole32/stg_prop.c b/dlls/ole32/stg_prop.c
index d7d340fe614..98f562d7098 100644
--- a/dlls/ole32/stg_prop.c
+++ b/dlls/ole32/stg_prop.c
@@ -1093,7 +1093,7 @@ static HRESULT PropertyStorage_ReadProperty(PROPVARIANT *prop, const BYTE *data,
         DWORD count;
        
         StorageUtl_ReadDWord(data, 0, &count);
-        if (codepage == CP_UNICODE && count / 2)
+        if (codepage == CP_UNICODE && count % 2)
         {
             WARN("Unicode string has odd number of bytes\n");
             hr = STG_E_INVALIDHEADER;