diff --git a/src/evalvars.c b/src/evalvars.c
index 42ff828..8aac766 100644
--- a/src/evalvars.c
+++ b/src/evalvars.c
@@ -1370,8 +1370,14 @@
 			|| opt_type == gov_hidden_bool
 			|| opt_type == gov_hidden_number)
 			     && (tv->v_type != VAR_STRING || !in_vim9script()))
-		// number, possibly hidden
-		n = (long)tv_get_number(tv);
+	    {
+		if (opt_type == gov_bool || opt_type == gov_hidden_bool)
+		    // bool, possibly hidden
+		    n = (long)tv_get_bool(tv);
+		else
+		    // number, possibly hidden
+		    n = (long)tv_get_number(tv);
+	    }
 
 	    // Avoid setting a string option to the text "v:false" or similar.
 	    // In Vim9 script also don't convert a number to string.
diff --git a/src/testdir/test_vim9_assign.vim b/src/testdir/test_vim9_assign.vim
index bdae635..da5e782 100644
--- a/src/testdir/test_vim9_assign.vim
+++ b/src/testdir/test_vim9_assign.vim
@@ -161,6 +161,15 @@
     assert_equal(6, &g:ts)
     &g:ts += 2
     assert_equal(8, &g:ts)
+
+    &number = true
+    assert_equal(true, &number)
+    &number = 0
+    assert_equal(false, &number)
+    &number = 1
+    assert_equal(true, &number)
+    &number = false
+    assert_equal(false, &number)
   END
   CheckDefAndScriptSuccess(lines)
 
diff --git a/src/version.c b/src/version.c
index 7be5728..f173735 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2297,
+/**/
     2296,
 /**/
     2295,