diff --git a/src/SearchAndDDE.cpp b/src/SearchAndDDE.cpp
index 32e3f4c6f7b2..c887464e3c9b 100644
--- a/src/SearchAndDDE.cpp
+++ b/src/SearchAndDDE.cpp
@@ -1119,7 +1119,7 @@ LRESULT OnDDExecute(HWND hwnd, WPARAM wp, LPARAM lp) {
     TempStr cmd = HGLOBALToStrTemp((HGLOBAL)hCommand, isUnicode);
     bool didHandle = HandleExecuteCmds(hwnd, cmd);
     DDEACK ack{};
-    ack.fAck = didHandle ? 0 : 1;
+    ack.fAck = didHandle ? 1 : 0;
     LPARAM lpres = PackDDElParam(WM_DDE_ACK, *(WORD*)&ack, (UINT_PTR)hCommand);
     PostMessageW(hwndClient, WM_DDE_ACK, (WPARAM)hwnd, lpres);
     return 0;