diff --git a/src/cheatsheets/Analysis1.typ b/src/cheatsheets/Analysis1.typ
index a97e420..4d2226d 100644
--- a/src/cheatsheets/Analysis1.typ
+++ b/src/cheatsheets/Analysis1.typ
@@ -372,7 +372,7 @@
     $f(x) = f(y) <=> x = y quad$
     
     *Surjectiv (Epimorhismis):* Output space coverered \
-    - $forall x in B : exists x in A : f(x) = y$
+    - $forall y in B : exists x in A : f(x) = y$
 
     *Bijektiv*
 
diff --git a/src/cheatsheets/LinearAlgebra.typ b/src/cheatsheets/LinearAlgebra.typ
index 431d2f3..1c3ab02 100644
--- a/src/cheatsheets/LinearAlgebra.typ
+++ b/src/cheatsheets/LinearAlgebra.typ
@@ -141,7 +141,7 @@
         *Surjectiv (Epimorhismis):* \
         _Output space coverered_ \
         - Zeigen das $f(f^(-1)(x)) = x$ für $x in DD$
-        - $forall x in B: exists x in A : f(x) = y$
+        - $forall y in B: exists x in A : f(x) = y$
         NICHT surjektiv wenn $abs(a) < abs(b)$
 
         *Bijektiv (Isomorphismus):* \