diff --git a/integration_tests/CMakeLists.txt b/integration_tests/CMakeLists.txt
index f7c33230ac3..56a07b2c620 100644
--- a/integration_tests/CMakeLists.txt
+++ b/integration_tests/CMakeLists.txt
@@ -494,6 +494,7 @@ RUN(NAME test_types_02       LABELS cpython llvm c wasm)
 RUN(NAME test_str_01         LABELS cpython llvm c)
 RUN(NAME test_str_02         LABELS cpython llvm c)
 RUN(NAME test_str_03         LABELS cpython llvm c)
+RUN(NAME test_str_04         LABELS cpython llvm c wasm)
 RUN(NAME test_list_01        LABELS cpython llvm c)
 RUN(NAME test_list_02        LABELS cpython llvm c)
 RUN(NAME test_list_03        LABELS cpython llvm c NOFAST)
diff --git a/integration_tests/test_str_04.py b/integration_tests/test_str_04.py
new file mode 100644
index 00000000000..c0ede7991f6
--- /dev/null
+++ b/integration_tests/test_str_04.py
@@ -0,0 +1,11 @@
+def main0():
+    x: str
+    x = "abcdefghijkl"
+    print(len(x))
+    assert len(x) == 12
+
+    y: str = "123"
+    print(len(y))
+    assert len(y) == 3
+
+main0()