diff --git a/pyerrors/correlators.py b/pyerrors/correlators.py
index 42412840..25de56b4 100644
--- a/pyerrors/correlators.py
+++ b/pyerrors/correlators.py
@@ -1404,7 +1404,7 @@ class Corr:
         if basematrix is None:
             basematrix = self
         if Ntrunc >= basematrix.N:
-            raise ValueError(f'Cannot truncate using Ntrunc <= {basematrix.N}')
+            raise ValueError(f'Cannot truncate using Ntrunc >= {basematrix.N}')
         if basematrix.N != self.N:
             raise ValueError('basematrix and targetmatrix have to be of the same size.')
 
diff --git a/pyerrors/covobs.py b/pyerrors/covobs.py
index 999d2632..f7722f8f 100644
--- a/pyerrors/covobs.py
+++ b/pyerrors/covobs.py
@@ -72,7 +72,7 @@ class Covobs:
         for i in range(self.N):
             for j in range(i):
                 if not self._cov[i][j] == self._cov[j][i]:
-                    raise Exception(f'Covariance matrix is non-symmetric for ({i}, {j}')
+                    raise Exception(f'Covariance matrix is non-symmetric for ({i}, {j})')
 
         evals = np.linalg.eigvalsh(self._cov)
         for ev in evals: