diff --git a/Source/Utils/WarpXTagging.cpp b/Source/Utils/WarpXTagging.cpp
index 807c92b2f0b..ed9daeb5480 100644
--- a/Source/Utils/WarpXTagging.cpp
+++ b/Source/Utils/WarpXTagging.cpp
@@ -47,7 +47,7 @@ WarpX::ErrorEst (int lev, TagBoxArray& tags, Real /*time*/, int /*ngrow*/)
             const RealVect pos {AMREX_D_DECL((i+0.5_rt)*dx[0]+problo[0],
                                        (j+0.5_rt)*dx[1]+problo[1],
                                        (k+0.5_rt)*dx[2]+problo[2])};
-            bool tag_val = 0;
+            bool tag_val = false;
             if (ref_parser) {
 #if defined (WARPX_DIM_3D)
                 tag_val = (ref_parser(pos[0], pos[1], pos[2]) == 1);
@@ -61,7 +61,7 @@ WarpX::ErrorEst (int lev, TagBoxArray& tags, Real /*time*/, int /*ngrow*/)
             } else {
                 tag_val = (pos > ftlo && pos < fthi);
             }
-            if ( tag_val == 1) {
+            if (tag_val) {
                 fab(i,j,k) = TagBox::SET;
             }
         });