diff --git a/src/testdir/test_vim9_expr.vim b/src/testdir/test_vim9_expr.vim
index a4e7c51..94d23c6 100644
--- a/src/testdir/test_vim9_expr.vim
+++ b/src/testdir/test_vim9_expr.vim
@@ -1880,6 +1880,7 @@
   CheckDefFailure(["var x = #{a : 8}"], 'E1068:', 1)
   CheckDefFailure(["var x = #{a :8}"], 'E1068:', 1)
   CheckDefFailure(["var x = #{a: 8 , b: 9}"], 'E1068:', 1)
+  CheckDefFailure(["var x = #{a: 1,b: 2}"], 'E1069:', 1)
 
   CheckDefFailure(["var x = #{8: 8}"], 'E1014:', 1)
   CheckDefFailure(["var x = #{xxx}"], 'E720:', 1)
diff --git a/src/version.c b/src/version.c
index 97a3b71..90ab88a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1868,
+/**/
     1867,
 /**/
     1866,
diff --git a/src/vim9compile.c b/src/vim9compile.c
index d9908d3..cd5e45b 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -2996,6 +2996,11 @@
 	    return FAIL;
 	}
 	whitep = *arg + 1;
+	if (!IS_WHITE_OR_NUL(*whitep))
+	{
+	    semsg(_(e_white_space_required_after_str), ",");
+	    return FAIL;
+	}
 	*arg = skipwhite(*arg + 1);
     }