diff --git a/tests/integrated/test-cyclic/test_cyclic.cxx b/tests/integrated/test-cyclic/test_cyclic.cxx
index abacf115a7..f90147d900 100644
--- a/tests/integrated/test-cyclic/test_cyclic.cxx
+++ b/tests/integrated/test-cyclic/test_cyclic.cxx
@@ -98,7 +98,7 @@ int main(int argc, char **argv) {
     for(int i=0;i<n;i++) {
       T val = ((mype*n + i) % 4) - 2.;
       output << "\t" << i << " : " << val << " ?= " << x(s, i) << endl;
-      if(abs(val - x(s, i)) > tol) {
+      if(std::abs(val - x(s, i)) > tol) {
         passed = 0;
       }
     }
diff --git a/tests/integrated/test-invpar/test_invpar.cxx b/tests/integrated/test-invpar/test_invpar.cxx
index 15dc853579..372bca85ba 100644
--- a/tests/integrated/test-invpar/test_invpar.cxx
+++ b/tests/integrated/test-invpar/test_invpar.cxx
@@ -56,7 +56,7 @@ int main(int argc, char **argv) {
     for (int z = 0; z < mesh->LocalNz; z++) {
       output.write("result: [{:d},{:d}] : {:e}, {:e}, {:e}\n", y, z, input(2, y, z),
                    result(2, y, z), deriv(2, y, z));
-      if (abs(input(2, y, z) - deriv(2, y, z)) > tol)
+      if (std::abs(input(2, y, z) - deriv(2, y, z)) > tol)
         passed = 0;
     }
   }