diff --git a/src/eval.c b/src/eval.c
index d2f06fd114..71bd353701 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -5421,6 +5421,7 @@ eval9_leader(
 		    {
 			rettv->v_type = VAR_BOOL;
 			val = f == 0.0 ? VVAL_TRUE : VVAL_FALSE;
+			type = VAR_BOOL;
 		    }
 		    else
 			f = !f;
diff --git a/src/testdir/test_vim9_expr.vim b/src/testdir/test_vim9_expr.vim
index 4551ea5eb9..ab0b02a6d1 100644
--- a/src/testdir/test_vim9_expr.vim
+++ b/src/testdir/test_vim9_expr.vim
@@ -4117,6 +4117,11 @@ def Test_expr9_not()
 
       assert_equal(false, ![1, 2, 3]->reverse())
       assert_equal(true, ![]->reverse())
+
+      # float
+      assert_equal(true, !0.0)
+      assert_equal(false, !1.0)
+      assert_equal(false, !25.678)
   END
   v9.CheckDefAndScriptSuccess(lines)
 enddef
diff --git a/src/version.c b/src/version.c
index 8279563519..78ae26eef0 100644
--- a/src/version.c
+++ b/src/version.c
@@ -734,6 +734,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2122,
 /**/
     2121,
 /**/