diff --git a/MeshLib/MeshGenerators/MeshLayerMapper.cpp b/MeshLib/MeshGenerators/MeshLayerMapper.cpp
index b333efd6723574b21c951a5814e51376c00b6003..9f9a1e895709b996f043fbe5d902cd8b3188a0ee 100644
--- a/MeshLib/MeshGenerators/MeshLayerMapper.cpp
+++ b/MeshLib/MeshGenerators/MeshLayerMapper.cpp
@@ -301,7 +301,7 @@ bool MeshLayerMapper::layerMapping(MeshLib::Mesh const& mesh,
 
         double elevation (raster.getValueAtPoint(*nodes[i]));
         constexpr double eps = std::numeric_limits<double>::epsilon();
-        if (std::fabs(elevation - header.no_data) < eps)
+        if (std::abs(elevation - header.no_data) < eps)
         {
             if (ignore_nodata)
             {
diff --git a/MeshLib/MeshQuality/ElementSizeMetric.cpp b/MeshLib/MeshQuality/ElementSizeMetric.cpp
index bfe74e7a89a39baddfeb70d2f353e17fbce84539..47eaecae48d018abc9e8544d9cbb00e41afd64e9 100644
--- a/MeshLib/MeshQuality/ElementSizeMetric.cpp
+++ b/MeshLib/MeshQuality/ElementSizeMetric.cpp
@@ -59,7 +59,7 @@ std::size_t ElementSizeMetric::calc1dQuality()
         double area(std::numeric_limits<double>::max());
         _element_quality_metric[k] = elements[k]->getContent();
         if (_element_quality_metric[k] <
-            std::sqrt(fabs(std::numeric_limits<double>::epsilon())))
+            std::sqrt(std::abs(std::numeric_limits<double>::epsilon())))
         {
             error_count++;
         }
@@ -93,7 +93,7 @@ std::size_t ElementSizeMetric::calc2dQuality()
             continue;
         }
         double const area = elem.getContent();
-        if (area < sqrt(fabs(std::numeric_limits<double>::epsilon())))
+        if (area < std::sqrt(std::abs(std::numeric_limits<double>::epsilon())))
         {
             error_count++;
         }
@@ -128,7 +128,7 @@ std::size_t ElementSizeMetric::calc3dQuality()
         }
 
         double const volume (elem.getContent());
-        if (volume < sqrt(fabs(std::numeric_limits<double>::epsilon())))
+        if (volume < sqrt(std::abs(std::numeric_limits<double>::epsilon())))
         {
             error_count++;
         }