diff --git a/news/tq.rst b/news/tq.rst
new file mode 100644
index 000000000..ffa62d0ca
--- /dev/null
+++ b/news/tq.rst
@@ -0,0 +1,13 @@
+**Added:** None
+
+**Changed:** None
+
+**Deprecated:** None
+
+**Removed:** None
+
+**Fixed:**
+
+* Fixed issue with starting triple quote strings being run as a command.
+
+**Security:** None
diff --git a/tests/test_tools.py b/tests/test_tools.py
index 2a70e6d52..8c1323766 100644
--- a/tests/test_tools.py
+++ b/tests/test_tools.py
@@ -403,6 +403,7 @@ mom"""
  "     --option2 value2 \\\n"
  "     --optionZ valueZ",
 1, "echo --option1 value1      --option2 value2      --optionZ valueZ", 3),
+('"""\n', 0, '"""', 1),
 ]
 
 @pytest.mark.parametrize('src, idx, exp_line, exp_n', LOGICAL_LINE_CASES)
diff --git a/xonsh/tools.py b/xonsh/tools.py
index 879c9832c..0cbea3b77 100644
--- a/xonsh/tools.py
+++ b/xonsh/tools.py
@@ -445,7 +445,7 @@ def get_logical_line(lines, idx):
     start = idx
     line = lines[idx]
     open_triple = _have_open_triple_quotes(line)
-    while (line.endswith(linecont) or open_triple) and idx < nlines:
+    while (line.endswith(linecont) or open_triple) and idx < nlines - 1:
         n += 1
         idx += 1
         if line.endswith(linecont):