diff --git a/drop-isEqual.patch b/drop-isEqual.patch
new file mode 100644
index 0000000..51e70b0
--- /dev/null
+++ b/drop-isEqual.patch
@@ -0,0 +1,31 @@
+diff --git a/PhysicsUtils/src/lib/CosmologicalDistances.cpp b/PhysicsUtils/src/lib/CosmologicalDistances.cpp
+index 780a461..a985aef 100644
+--- a/PhysicsUtils/src/lib/CosmologicalDistances.cpp
++++ b/PhysicsUtils/src/lib/CosmologicalDistances.cpp
+@@ -48,7 +48,7 @@ double CosmologicalDistances::hubbleParameter(double z, const CosmologicalParame
+ 
+ double CosmologicalDistances::comovingDistance(double z, const CosmologicalParameters& parameters,
+                                                double relative_precision) const {
+-  if (Elements::isEqual(0., z)) {
++  if (z == 0) {
+     return 0.;
+   }
+ 
+@@ -63,7 +63,7 @@ double CosmologicalDistances::comovingDistance(double z, const CosmologicalParam
+ 
+ double CosmologicalDistances::transverseComovingDistance(double z, const CosmologicalParameters& parameters) const {
+   double comoving = comovingDistance(z, parameters);
+-  if (Elements::isEqual(0., parameters.getOmegaK())) {
++  if (parameters.getOmegaK() == 0.) {
+     return comoving;
+   }
+ 
+@@ -77,7 +77,7 @@ double CosmologicalDistances::transverseComovingDistance(double z, const Cosmolo
+ }
+ 
+ double CosmologicalDistances::luminousDistance(double z, const CosmologicalParameters& parameters) const {
+-  if (Elements::isEqual(0., z)) {
++  if (z == 0.) {
+     return 10.;
+   } else {
+     return (1. + z) * transverseComovingDistance(z, parameters);
diff --git a/elements-alexandria.spec b/elements-alexandria.spec
index 9e4726f..b629145 100644
--- a/elements-alexandria.spec
+++ b/elements-alexandria.spec
@@ -10,6 +10,7 @@ Source0:        https://github.com/astrorama/Alexandria/archive/%{version}/%{nam
 # https://upload.cppreference.com/w/File:cppreference-doxygen-web.tag.xml
 Source1:        cppreference-doxygen-web.tag.xml
 Patch0:         ascii_reader_i386.patch
+Patch1:         drop-isEqual.patch
 
 %global elements_version 6.0.1