diff --git a/_imaging.c b/_imaging.c
index 8a7761055..37dab7839 100644
--- a/_imaging.c
+++ b/_imaging.c
@@ -783,7 +783,7 @@ _convert_matrix(ImagingObject* self, PyObject* args)
     char* mode;
     float m[12];
     if (!PyArg_ParseTuple(args, "s(ffff)", &mode, m+0, m+1, m+2, m+3)) {
-    PyErr_Clear();
+        PyErr_Clear();
     if (!PyArg_ParseTuple(args, "s(ffffffffffff)", &mode,
                   m+0, m+1, m+2, m+3,
                   m+4, m+5, m+6, m+7,