diff --git a/info/exercises/ex-02-sol.pdf b/info/exercises/ex-02-sol.pdf
index 194230c544105acb2b47a1564aae820b2d7fe003..47bb3a8cece402275ad716d843f80b826cb19d13 100644
Binary files a/info/exercises/ex-02-sol.pdf and b/info/exercises/ex-02-sol.pdf differ
diff --git a/info/exercises/ex-02.pdf b/info/exercises/ex-02.pdf
index 74f714d9d8068d60c2f437aa132fd96c3aa77ff4..4af57628d82238c937075f44b6b6cfac0eb42b4b 100644
Binary files a/info/exercises/ex-02.pdf and b/info/exercises/ex-02.pdf differ
diff --git a/info/exercises/src/ex-02/ex/cfg.tex b/info/exercises/src/ex-02/ex/cfg.tex
index d4b33a341fde72140a8346a95df5e1b08db6a521..f200e3f7e51439c9567ca6204de544ee50ddc22b 100644
--- a/info/exercises/src/ex-02/ex/cfg.tex
+++ b/info/exercises/src/ex-02/ex/cfg.tex
@@ -5,7 +5,7 @@
   generates it:
 
   \begin{enumerate}
-    \item \(L_1 = \{a^nb^m \mid n, m \in \naturals \land n > 0 \land m > n\}\)
+    \item \(L_1 = \{a^nb^m \mid n, m \in \naturals \land n \geq 0 \land m \geq n\}\)
     \item \(L_2 = \{a^nb^mc^{n+m} \mid n, m \in \naturals\}\)
     \item \(L_3 = \{w \in \{a, b\}^* \mid \exists m \in \naturals.\; |w| = 2m +
     1 \land w_{(m+1)} = a \}\) (\(w\) is of odd length, has \(a\) in the middle)
@@ -13,7 +13,7 @@
 
   \begin{solution}
     \begin{enumerate}
-      \item \(L_1 = \{a^nb^m \mid n, m \in \naturals \land n > 0 \land m > n\}\)
+      \item \(L_1 = \{a^nb^m \mid n, m \in \naturals \land n \geq 0 \land m \geq n\}\)
       \begin{align*}
         S &::= aSb \mid B\\
         B &::= bB \mid \epsilon