diff --git a/src/OpenSpaceToolkit/Astrodynamics/Trajectory/Orbit/Models/Kepler/BrouwerLyddaneMean.cpp b/src/OpenSpaceToolkit/Astrodynamics/Trajectory/Orbit/Models/Kepler/BrouwerLyddaneMean.cpp
index 32d68aeb3..9659e726d 100644
--- a/src/OpenSpaceToolkit/Astrodynamics/Trajectory/Orbit/Models/Kepler/BrouwerLyddaneMean.cpp
+++ b/src/OpenSpaceToolkit/Astrodynamics/Trajectory/Orbit/Models/Kepler/BrouwerLyddaneMean.cpp
@@ -86,7 +86,7 @@ Vector6d BrouwerLyddaneMean::Cartesian(
     if ((coe.getEccentricity() > 0.99) || (coe.getEccentricity() < 0.0))
     {
         throw ostk::core::error::RuntimeError(
-            String::Format("BrouwerLyddaneMean is applicable only if 0.0 < Ecc: [{}] < 0.99.", coe.getEccentricity())
+            "BrouwerLyddaneMean is applicable only if 0.0 < Ecc: [{}] < 0.99.", coe.getEccentricity()
         );
     }
 
@@ -94,7 +94,7 @@ Vector6d BrouwerLyddaneMean::Cartesian(
     if (perigee < 3000000.0)
     {
         throw ostk::core::error::RuntimeError(
-            String::Format("BrouwerLyddaneMean is applicable only if Perigee radius: [{}] > 3000000.0 m.", perigee)
+            "BrouwerLyddaneMean is applicable only if Perigee radius: [{}] > 3000000.0 m.", perigee
         );
     }
     if (perigee < 6378000.0)
@@ -111,9 +111,9 @@ Vector6d BrouwerLyddaneMean::Cartesian(
     const Real inclination_degrees = coe.getInclination().inDegrees();
     if (inclination_degrees > 180.0)
     {
-        throw ostk::core::error::RuntimeError(String::Format(
+        throw ostk::core::error::RuntimeError(
             "BrouwerLyddaneMean is applicable only if inclination: [{}] < 180.0 degrees.", inclination_degrees
-        ));
+        );
     }
 
     if ((58.80 < inclination_degrees && inclination_degrees < 65.78) ||
diff --git a/src/OpenSpaceToolkit/Astrodynamics/Trajectory/Orbit/Models/Kepler/BrouwerLyddaneMeanLong.cpp b/src/OpenSpaceToolkit/Astrodynamics/Trajectory/Orbit/Models/Kepler/BrouwerLyddaneMeanLong.cpp
index 5ae9362a7..dc83c4064 100644
--- a/src/OpenSpaceToolkit/Astrodynamics/Trajectory/Orbit/Models/Kepler/BrouwerLyddaneMeanLong.cpp
+++ b/src/OpenSpaceToolkit/Astrodynamics/Trajectory/Orbit/Models/Kepler/BrouwerLyddaneMeanLong.cpp
@@ -79,7 +79,7 @@ COE BrouwerLyddaneMeanLong::toCOE() const
     if (eccdp > 0.99)
     {
         throw ostk::core::error::RuntimeError(
-            String::Format("BrouwerLyddaneMeanLong is applicable only if 0.0 < Ecc: [{}] < 0.99.", eccdp)
+            "BrouwerLyddaneMeanLong is applicable only if 0.0 < Ecc: [{}] < 0.99.", eccdp
         );
     }
 
@@ -87,7 +87,7 @@ COE BrouwerLyddaneMeanLong::toCOE() const
     if (perigee < 3000000.0)
     {
         throw ostk::core::error::RuntimeError(
-            String::Format("BrouwerLyddaneMeanLong is applicable only if Perigee radius: [{}] > 3000000.0 m.", perigee)
+            "BrouwerLyddaneMeanLong is applicable only if Perigee radius: [{}] > 3000000.0 m.", perigee
         );
     }
     if (perigee < 6378000.0)
@@ -103,10 +103,10 @@ COE BrouwerLyddaneMeanLong::toCOE() const
 
     if (incdp > Real::Pi())
     {
-        throw ostk::core::error::RuntimeError(String::Format(
+        throw ostk::core::error::RuntimeError(
             "BrouwerLyddaneMeanLong is applicable only if inclination: [{}] < 180.0 degrees.",
             Angle::Radians(incdp).inDegrees()
-        ));
+        );
     }
 
     const Real bk2 = (1.0 / 2.0) * (j2 * ae * ae);
diff --git a/src/OpenSpaceToolkit/Astrodynamics/Trajectory/Orbit/Models/Kepler/BrouwerLyddaneMeanShort.cpp b/src/OpenSpaceToolkit/Astrodynamics/Trajectory/Orbit/Models/Kepler/BrouwerLyddaneMeanShort.cpp
index 1bad4b40a..0b2941098 100644
--- a/src/OpenSpaceToolkit/Astrodynamics/Trajectory/Orbit/Models/Kepler/BrouwerLyddaneMeanShort.cpp
+++ b/src/OpenSpaceToolkit/Astrodynamics/Trajectory/Orbit/Models/Kepler/BrouwerLyddaneMeanShort.cpp
@@ -67,10 +67,10 @@ COE BrouwerLyddaneMeanShort::toCOE() const
 
     if ((incp < 0.0) || (incp > Real::Pi()))
     {
-        throw ostk::core::error::RuntimeError(String::Format(
+        throw ostk::core::error::RuntimeError(
             "BrouwerLyddaneMeanShort is applicable only if 0.0 < inclination: [{}] < 180.0 degrees.",
             Angle::Radians(incp).inDegrees()
-        ));
+        );
     }
 
     if (incp > 3.0543261909900763)
@@ -98,7 +98,7 @@ COE BrouwerLyddaneMeanShort::toCOE() const
     if (eccp > 0.99)
     {
         throw ostk::core::error::RuntimeError(
-            String::Format("BrouwerLyddaneMeanShort is applicable only if 0.0 < Ecc: [{}] < 0.99.", eccp)
+            "BrouwerLyddaneMeanShort is applicable only if 0.0 < Ecc: [{}] < 0.99.", eccp
         );
     }
 
@@ -106,7 +106,7 @@ COE BrouwerLyddaneMeanShort::toCOE() const
     if (perigee < 3000000.0)
     {
         throw ostk::core::error::RuntimeError(
-            String::Format("BrouwerLyddaneMeanShort is applicable only if Perigee radius: [{}] > 3000000.0 m.", perigee)
+            "BrouwerLyddaneMeanShort is applicable only if Perigee radius: [{}] > 3000000.0 m.", perigee
         );
     }
     if (perigee < 6378000.0)