diff --git a/MathLib/LinAlg/PETSc/PETScLinearSolver.cpp b/MathLib/LinAlg/PETSc/PETScLinearSolver.cpp
index 138414419d34d71f4c09ad50185e1634ed3438e0..c8b821d09f192d93f0e181582a822962473082c6 100644
--- a/MathLib/LinAlg/PETSc/PETScLinearSolver.cpp
+++ b/MathLib/LinAlg/PETSc/PETScLinearSolver.cpp
@@ -140,7 +140,7 @@ bool PETScLinearSolver::solve(PETScMatrix& A, PETScVector &b, PETScVector &x)
 
 #ifdef TEST_MEM_PETSC
     PetscMemoryGetCurrentUsage(&mem2);
-    PetscPrintf(PETSC_COMM_WORLD, "###Memory usage by solver. Before :%f After:%f Increase:%d\n", mem1, mem2, (int)(mem2 - mem1));
+    PetscPrintf(PETSC_COMM_WORLD, "###Memory usage by solver. Before: %f After: %f Increase: %d\n", mem1, mem2, (int)(mem2 - mem1));
 #endif
 
     _elapsed_ctime += wtimer.elapsed();