diff --git a/src/djlint/formatter/indent.py b/src/djlint/formatter/indent.py
index 0588892..de813d8 100644
--- a/src/djlint/formatter/indent.py
+++ b/src/djlint/formatter/indent.py
@@ -101,6 +101,17 @@ def indent_html(rawcode: str, config: Config) -> str:
             )
             and is_block_raw is False
             and not is_safe_closing_tag(config, item)
+            # and not ending in a slt like <span><strong></strong>.
+            and not re.findall(
+                rf"(<({slt_html})>)(.*?)(</(\2)>[^<]*?$)",
+                item,
+                re.IGNORECASE | re.VERBOSE | re.MULTILINE,
+            )
+            and not re.findall(
+                rf"(<({slt_html})\\b.+?>)(.*?)(</(\2)>[^<]*?$)",
+                item,
+                re.IGNORECASE | re.VERBOSE | re.MULTILINE,
+            )
         ):
             # block to catch inline block followed by a non-break tag
             if (
diff --git a/tests/test_html/test_tag_span.py b/tests/test_html/test_tag_span.py
index 21433fc..fd98117 100644
--- a/tests/test_html/test_tag_span.py
+++ b/tests/test_html/test_tag_span.py
@@ -5,7 +5,7 @@ run:
     pytest tests/test_html/test_tag_span.py --cov=src/djlint --cov-branch \
           --cov-report xml:coverage.xml --cov-report term-missing
 
-    pytest tests/test_html/test_tag_span.py::test_span_tag
+    pytest tests/test_html/test_tag_span.py::test_nested_string
 
 
 """
@@ -45,3 +45,23 @@ def test_span_tag(runner: CliRunner, tmp_file: TextIO) -> None:
 </div>""",
     )  # noqa: E501
     assert output.exit_code == 0
+
+
+def test_nested_string(runner: CliRunner, tmp_file: TextIO) -> None:
+    write_to_file(
+        tmp_file.name,
+        b"""<p><p><span><strong>asdf</strong><br></span></p></p>""",
+    )
+    runner.invoke(djlint, [tmp_file.name, "--reformat"])
+
+    assert (
+        Path(tmp_file.name).read_text(encoding="utf8")
+        == """<p>
+    <p>
+        <span><strong>asdf</strong>
+            <br>
+        </span>
+    </p>
+</p>
+"""
+    )