diff --git a/Tutorials/T05-PyUnit/slides/Unit Testing.tex b/Tutorials/T05-PyUnit/slides/Unit Testing.tex
index 86232d9bcf8d138e6b97d3afad09d2c738f1d7a2..997ca72163f5ed5963b0d47d66eae828382fd4fa 100644
--- a/Tutorials/T05-PyUnit/slides/Unit Testing.tex	
+++ b/Tutorials/T05-PyUnit/slides/Unit Testing.tex	
@@ -292,7 +292,6 @@ class TestCircles:
 	\end{itemize}
 
 	\item{By default, \texttt{approx} considers numbers within a relative tolerance of 1e-6 and absolute tolerance of 1e-12 of its expected value to be equal. }
-
 \end{itemize}
 \begin{lstlisting}[language=Python, escapechar=!]
 >>> 1.0001 == approx(1)
@@ -304,7 +303,6 @@ True
 \end{lstlisting}
 \end{frame}
 
-
 \begin{frame}[fragile]
 \frametitle{Redundant code in tests}
 \begin{lstlisting}[language=Python, escapechar=!]
@@ -319,7 +317,7 @@ class TestCircles:
 
 	def test_xcoord_are_not_equal(self):
 		!\colorbox{yellow}{circle = CircleT(1,2,3)}!
-		assert circle.xcoord() != 1
+		assert not circle.xcoord() == 1
 \end{lstlisting}
 \end{frame}
 
@@ -341,7 +339,7 @@ class TestCircles:
 		assert self.circle.xcoord() == 1
 
 	def test_xcoord_are_not_equal(self):
-		assert self.circle.xcoord() != 2
+		assert not self.circle.xcoord() == 2
 \end{lstlisting}
 \end{frame}
 
@@ -380,8 +378,8 @@ class TestCircles:
 import pytest
 
 def test_zero_division():
-with pytest.raises(ZeroDivisionError):
-1 / 0
+	with pytest.raises(ZeroDivisionError):
+		1 / 0
 \end{lstlisting}
 \end{frame}