diff --git a/MathLib/LinAlg/PETSc/PETScVector.h b/MathLib/LinAlg/PETSc/PETScVector.h
index 37552355f09a7bb4511af547f580b2c6431bae93..5474762dccafd2d3f495aa94d137a10f7c5489f1 100644
--- a/MathLib/LinAlg/PETSc/PETScVector.h
+++ b/MathLib/LinAlg/PETSc/PETScVector.h
@@ -20,7 +20,7 @@
 #include <string>
 #include <vector>
 
-#include "petscvec.h"
+#include <petscvec.h>
 #include "LinAlg/VectorNorms.h"
 
 typedef Vec PETSc_Vec;
diff --git a/Tests/testrunner.cpp b/Tests/testrunner.cpp
index cadaa5d633c59adbb88cc09d3d50cc44d6227d5d..af887d2e65bb1ccf5a0cba0ad4555e1e2f198657 100644
--- a/Tests/testrunner.cpp
+++ b/Tests/testrunner.cpp
@@ -18,11 +18,11 @@
 #include "logog/include/logog.hpp"
 
 #ifdef USE_LIS
-#include "lis.h"
+#include <lis.h>
 #endif
 
 #ifdef USE_PETSC
-#include "petscksp.h"
+#include <petscksp.h>
 #endif
 
 #include "BaseLib/TemplateLogogFormatterSuppressedGCC.h"