--- a/slides/slides05.tex	Fri Oct 26 16:14:10 2018 +0100
+++ b/slides/slides05.tex	Fri Oct 26 17:13:41 2018 +0100
@@ -754,7 +754,7 @@
 \frametitle{Parse Trees}
 \mbox{}\\[-12mm]
 
-\bl{\begin{plstx}: \meta{E} ::= \meta{F} | \meta{T} \cdot + \cdot \meta{E} |  \meta{T} \cdot - \cdot \meta{E}\\
+\bl{\begin{plstx}: \meta{E} ::= \meta{T} | \meta{T} \cdot + \cdot \meta{E} |  \meta{T} \cdot - \cdot \meta{E}\\
 : \meta{T} ::= \meta{F} | \meta{F} \cdot * \cdot \meta{T}\\
 : \meta{F} ::= num\_token | ( \cdot \meta{E} \cdot )\\
 \end{plstx}}