diff --git a/src/eval.c b/src/eval.c
index 307a2ae..c3f0ee5 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -2413,13 +2413,11 @@
     static int
 eval4(char_u **arg, typval_T *rettv, evalarg_T *evalarg)
 {
-    typval_T	var2;
     char_u	*p;
     int		getnext;
     int		i;
     exptype_T	type = EXPR_UNKNOWN;
     int		len = 2;
-    int		ic;
 
     /*
      * Get the first variable.
@@ -2472,6 +2470,10 @@
      */
     if (type != EXPR_UNKNOWN)
     {
+	typval_T    var2;
+	int	    ic;
+	int	    vim9script = in_vim9script();
+
 	if (getnext)
 	    *arg = eval_next_line(evalarg);
 
@@ -2487,9 +2489,9 @@
 	    ic = FALSE;
 	    ++len;
 	}
-	// nothing appended: use 'ignorecase'
+	// nothing appended: use 'ignorecase' if not in Vim script
 	else
-	    ic = p_ic;
+	    ic = vim9script ? FALSE : p_ic;
 
 	/*
 	 * Get the second variable.
@@ -2504,8 +2506,7 @@
 	{
 	    int ret;
 
-	    if (in_vim9script() && check_compare_types(
-						   type, rettv, &var2) == FAIL)
+	    if (vim9script && check_compare_types(type, rettv, &var2) == FAIL)
 	    {
 		ret = FAIL;
 		clear_tv(rettv);
diff --git a/src/testdir/test_vim9_expr.vim b/src/testdir/test_vim9_expr.vim
index 4c9db5c..d6cbd03 100644
--- a/src/testdir/test_vim9_expr.vim
+++ b/src/testdir/test_vim9_expr.vim
@@ -651,7 +651,7 @@
       vim9script
       let var = 0
       		< 1
-      assert_equal(1, var)
+      assert_equal(true, var)
   END
   CheckScriptSuccess(lines)
 
@@ -659,7 +659,7 @@
       vim9script
       let var = 123
       		!= 123
-      assert_equal(0, var)
+      assert_equal(false, var)
   END
   CheckScriptSuccess(lines)
 
@@ -667,7 +667,7 @@
       vim9script
       let var = 123 ==
       			123
-      assert_equal(1, var)
+      assert_equal(true, var)
   END
   CheckScriptSuccess(lines)
 
@@ -676,7 +676,7 @@
       let list = [1, 2, 3]
       let var = list
       		is list
-      assert_equal(1, var)
+      assert_equal(true, var)
   END
   CheckScriptSuccess(lines)
 
@@ -685,7 +685,7 @@
       let myblob = 0z1234
       let var = myblob
       		isnot 0z11
-      assert_equal(1, var)
+      assert_equal(true, var)
   END
   CheckScriptSuccess(lines)
 
@@ -707,6 +707,25 @@
       echo 123 is 123
   END
   CheckScriptFailure(lines, 'Cannot use "is" with number')
+
+  # check 'ignorecase' not being used
+  lines =<< trim END
+    vim9script
+    set ignorecase
+    assert_equal(false, 'abc' == 'ABC')
+    assert_equal(false, 'abc' ==# 'ABC')
+    assert_equal(true, 'abc' ==? 'ABC')
+
+    assert_equal(true, 'abc' != 'ABC')
+    assert_equal(true, 'abc' !=# 'ABC')
+    assert_equal(false, 'abc' !=? 'ABC')
+
+    assert_equal(false, 'abc' =~ 'ABC')
+    assert_equal(false, 'abc' =~# 'ABC')
+    assert_equal(true, 'abc' =~? 'ABC')
+    set noignorecase
+  END
+  CheckScriptSuccess(lines)
 enddef
 
 func Test_expr4_fails()
diff --git a/src/typval.c b/src/typval.c
index 9d0c6ac..e87f910 100644
--- a/src/typval.c
+++ b/src/typval.c
@@ -790,8 +790,16 @@
 	}
     }
     clear_tv(typ1);
-    typ1->v_type = VAR_NUMBER;
-    typ1->vval.v_number = n1;
+    if (in_vim9script())
+    {
+	typ1->v_type = VAR_BOOL;
+	typ1->vval.v_number = n1 ? VVAL_TRUE : VVAL_FALSE;
+    }
+    else
+    {
+	typ1->v_type = VAR_NUMBER;
+	typ1->vval.v_number = n1;
+    }
 
     return OK;
 }
diff --git a/src/version.c b/src/version.c
index f34bb8d..a269082 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1263,
+/**/
     1262,
 /**/
     1261,
diff --git a/src/vim9execute.c b/src/vim9execute.c
index d83ac5a..c75e095 100644
--- a/src/vim9execute.c
+++ b/src/vim9execute.c
@@ -2017,9 +2017,6 @@
 
 		    typval_compare(tv1, tv2, exptype, ic);
 		    clear_tv(tv2);
-		    tv1->v_type = VAR_BOOL;
-		    tv1->vval.v_number = tv1->vval.v_number
-						      ? VVAL_TRUE : VVAL_FALSE;
 		    --ectx.ec_stack.ga_len;
 		}
 		break;