diff --git a/ivtest/ivltests/sv_lval_idx_part_invalid_base_down_fail.v b/ivtest/ivltests/sv_lval_idx_part_invalid_base_down_fail.v
new file mode 100644
index 000000000..769a76899
--- /dev/null
+++ b/ivtest/ivltests/sv_lval_idx_part_invalid_base_down_fail.v
@@ -0,0 +1,9 @@
+// Check that invalid indexed part-select l-value bases report an error.
+
+module test;
+  reg [31:0] a;
+
+  initial begin
+    a[does_not_exist -: 2] = 2'b00;
+  end
+endmodule
diff --git a/ivtest/regress-vvp.list b/ivtest/regress-vvp.list
index b66ada6b5..043df7b52 100644
--- a/ivtest/regress-vvp.list
+++ b/ivtest/regress-vvp.list
@@ -343,6 +343,7 @@ sv_lval_concat_uarray_fail1	vvp_tests/sv_lval_concat_uarray_fail1.json
 sv_lval_concat_uarray_fail2	vvp_tests/sv_lval_concat_uarray_fail2.json
 sv_lval_concat_uarray_fail3	vvp_tests/sv_lval_concat_uarray_fail3.json
 sv_lval_concat_uarray_fail4	vvp_tests/sv_lval_concat_uarray_fail4.json
+sv_lval_idx_part_invalid_base_down_fail	vvp_tests/sv_lval_idx_part_invalid_base_down_fail.json
 sv_mixed_assign1		vvp_tests/sv_mixed_assign1.json
 sv_mixed_assign2		vvp_tests/sv_mixed_assign2.json
 sv_mixed_assign_error1		vvp_tests/sv_mixed_assign_error1.json
diff --git a/ivtest/vvp_tests/sv_lval_idx_part_invalid_base_down_fail.json b/ivtest/vvp_tests/sv_lval_idx_part_invalid_base_down_fail.json
new file mode 100644
index 000000000..e04a3a978
--- /dev/null
+++ b/ivtest/vvp_tests/sv_lval_idx_part_invalid_base_down_fail.json
@@ -0,0 +1,5 @@
+{
+    "type"          : "CE",
+    "source"        : "sv_lval_idx_part_invalid_base_down_fail.v",
+    "iverilog-args" : [ "-g2001" ]
+}