diff --git a/puttygen.c b/puttygen.c
index a8945b5c..ff3f9f73 100644
--- a/puttygen.c
+++ b/puttygen.c
@@ -930,7 +930,7 @@ static int CALLBACK MainDlgProc(HWND hwnd, UINT msg,
 	}
 	CheckRadioButton(hwnd, IDC_KEYSSH1, IDC_KEYSSH2DSA, IDC_KEYSSH2RSA);
 	CheckMenuRadioItem(state->keymenu, IDC_KEYSSH1, IDC_KEYSSH2DSA,
-			   IDC_KEYSSH1, MF_BYCOMMAND);
+			   IDC_KEYSSH2RSA, MF_BYCOMMAND);
 	SetDlgItemInt(hwnd, IDC_BITS, DEFAULT_KEYSIZE, FALSE);
 
 	/*