diff --git a/tests/concatenate_res_template.rs b/tests/concatenate_res_template.rs
new file mode 100644
index 00000000..0f4f87c9
--- /dev/null
+++ b/tests/concatenate_res_template.rs
@@ -0,0 +1,57 @@
+mod test_infra;
+
+use crate::test_infra::{evaluate, run_aml_test};
+use aml_test_tools::handlers::null_handler::NullHandler;
+
+// regression test for 31b3057, ensure ConcatenateRestTemplate does
+// not concatenate end tags
+#[test]
+fn concatenate_res_template_strip_end_tags() {
+    const AML: &str = r#"
+DefinitionBlock ("", "SSDT", 1, "LENOVO", "Platform", 0x00001000) {
+    Scope (\_SB) {
+        Device (TPD0) {
+            Name (_ADR, One)
+            Name (_CID, "PNP0C50")
+            Name (_UID, 0x03)
+            Name (_S0W, 0x04)
+            Method (_HID, 0, NotSerialized)
+            {
+                Return ("ELAN0630")
+            }
+            Name (EIC0, ResourceTemplate ()
+            {
+                I2cSerialBusV2 (0x0015, ControllerInitiated, 0x00061A80,
+                    AddressingMode7Bit, "",
+                    0x00, ResourceConsumer, , Exclusive,
+                    )
+            })
+            Name (TINT, ResourceTemplate ()
+            {
+                GpioInt (Level, ActiveLow, ExclusiveAndWake, PullDefault, 0x0000,
+                    "", 0x00, ResourceConsumer, ,
+                    )
+                    {   // Pin list
+                        0x001D
+                    }
+            })
+            Method (_CRS, 0, NotSerialized)
+            {
+                Return (ConcatenateResTemplate (EIC0, TINT))
+            }
+
+        }
+    }
+}
+"#;
+
+    let interpreter = run_aml_test(AML, NullHandler {});
+    let crs = evaluate(&interpreter, "\\_SB.TPD0._CRS");
+    let buffer = crs.as_buffer().unwrap();
+
+    assert_eq!(1, buffer.iter().filter(|b| **b == 0x79).count());
+
+    // additional regression test for 9748050 where the end tag value was
+    // incorrectly 0x78 vs 0x78|1
+    assert_eq!(0, buffer.iter().filter(|b| **b == 0x78).count());
+}