diff --git a/cms/djangoapps/contentstore/views.py b/cms/djangoapps/contentstore/views.py
index bfdfb1742b..0d58133763 100644
--- a/cms/djangoapps/contentstore/views.py
+++ b/cms/djangoapps/contentstore/views.py
@@ -454,7 +454,8 @@ def preview_dispatch(request, preview_id, location, dispatch=None):
         raise Http404
 
     except ProcessingError:
-        log.warning("Module raised an error while processing AJAX request")
+        log.warning("Module raised an error while processing AJAX request",
+                    exc_info=True)
         return HttpResponseBadRequest()
 
     except:
diff --git a/common/lib/xmodule/xmodule/capa_module.py b/common/lib/xmodule/xmodule/capa_module.py
index 4975478421..3e594f9d46 100644
--- a/common/lib/xmodule/xmodule/capa_module.py
+++ b/common/lib/xmodule/xmodule/capa_module.py
@@ -735,7 +735,8 @@ class CapaModule(CapaFields, XModule):
             self.set_state_from_lcp()
 
         except (StudentInputError, ResponseError, LoncapaProblemError) as inst:
-            log.exception("StudentInputError in capa_module:problem_check")
+            log.warning("StudentInputError in capa_module:problem_check",
+                        exc_info=True)
 
             # If the user is a staff member, include
             # the full exception, including traceback,
diff --git a/lms/djangoapps/courseware/module_render.py b/lms/djangoapps/courseware/module_render.py
index 39d16dbb19..48aab024df 100644
--- a/lms/djangoapps/courseware/module_render.py
+++ b/lms/djangoapps/courseware/module_render.py
@@ -451,7 +451,8 @@ def modx_dispatch(request, dispatch, location, course_id):
 
     # For XModule-specific errors, we respond with 400
     except ProcessingError:
-        log.exception("Module encountered an error while prcessing AJAX call")
+        log.warning("Module encountered an error while prcessing AJAX call",
+                    exc_info=True)
         return HttpResponseBadRequest()
 
     # If any other error occurred, re-raise it to trigger a 500 response