diff --git a/library.properties b/library.properties
index b19ae7c..e008edd 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=Adafruit AHRS
-version=2.3.3
+version=2.3.5
 author=Adafruit
 maintainer=Adafruit <info@adafruit.com>
 sentence=AHRS (Altitude and Heading Reference System) for various Adafruit motion sensors
diff --git a/src/Adafruit_AHRS_Madgwick.cpp b/src/Adafruit_AHRS_Madgwick.cpp
index d8234ff..6b7daf9 100644
--- a/src/Adafruit_AHRS_Madgwick.cpp
+++ b/src/Adafruit_AHRS_Madgwick.cpp
@@ -282,13 +282,14 @@ void Adafruit_Madgwick::updateIMU(float gx, float gy, float gz, float ax,
 
 float Adafruit_Madgwick::invSqrt(float x) {
   float halfx = 0.5f * x;
-  float y = x;
-  long i = *(long *)&y;
-  i = 0x5f3759df - (i >> 1);
-  y = *(float *)&i;
-  y = y * (1.5f - (halfx * y * y));
-  y = y * (1.5f - (halfx * y * y));
-  return y;
+  union {
+    float f;
+    long i;
+  } conv = {x};
+  conv.i = 0x5f3759df - (conv.i >> 1);
+  conv.f *= 1.5f - (halfx * conv.f * conv.f);
+  conv.f *= 1.5f - (halfx * conv.f * conv.f);
+  return conv.f;
 }
 
 //-------------------------------------------------------------------------------------------
diff --git a/src/Adafruit_AHRS_Mahony.cpp b/src/Adafruit_AHRS_Mahony.cpp
index c01b510..bb1dc0a 100644
--- a/src/Adafruit_AHRS_Mahony.cpp
+++ b/src/Adafruit_AHRS_Mahony.cpp
@@ -261,13 +261,14 @@ void Adafruit_Mahony::updateIMU(float gx, float gy, float gz, float ax,
 
 float Adafruit_Mahony::invSqrt(float x) {
   float halfx = 0.5f * x;
-  float y = x;
-  long i = *(long *)&y;
-  i = 0x5f3759df - (i >> 1);
-  y = *(float *)&i;
-  y = y * (1.5f - (halfx * y * y));
-  y = y * (1.5f - (halfx * y * y));
-  return y;
+  union {
+    float f;
+    long i;
+  } conv = {x};
+  conv.i = 0x5f3759df - (conv.i >> 1);
+  conv.f *= 1.5f - (halfx * conv.f * conv.f);
+  conv.f *= 1.5f - (halfx * conv.f * conv.f);
+  return conv.f;
 }
 
 //-------------------------------------------------------------------------------------------