diff --git a/make-includes/build_lecture_rules.make b/make-includes/build_lecture_rules.make
index 600ac43..d137ab7 100644
--- a/make-includes/build_lecture_rules.make
+++ b/make-includes/build_lecture_rules.make
@@ -100,7 +100,7 @@
 #   * others to aid debugging
 # 
 #
-LATEX_FLAGS+=-shell-escape -interaction=nonstopmode -halt-on-error -file-line-error
+LATEX_FLAGS+=-synctex=1 -shell-escape -interaction=nonstopmode -halt-on-error -file-line-error
 
 
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