diff --git a/lib/lepton/src/CompiledExpression.cpp b/lib/lepton/src/CompiledExpression.cpp
index 61dd942c62..b3a1fadf41 100644
--- a/lib/lepton/src/CompiledExpression.cpp
+++ b/lib/lepton/src/CompiledExpression.cpp
@@ -38,6 +38,7 @@ using namespace Lepton;
 using namespace std;
 #ifdef LEPTON_USE_JIT
     using namespace asmjit;
+    #include <cinttypes>
 #endif
 
 CompiledExpression::CompiledExpression() : jitCode(NULL) {
@@ -513,6 +514,12 @@ void CompiledExpression::generateTwoArgCall(a64::Compiler& c, arm::Vec& dest, ar
     invoke->setRet(0, dest);
 }
 #else
+
+union int64_vs_double {
+    int64_t i;
+    double  d;
+};
+
 void CompiledExpression::generateJitCode() {
     const CpuInfo& cpu = CpuInfo::host();
     if (!cpu.hasFeature(CpuFeatures::X86::kAVX))
@@ -561,8 +568,9 @@ void CompiledExpression::generateJitCode() {
         else if (op.getId() == Operation::DELTA)
             value = 1.0;
         else if (op.getId() == Operation::ABS) {
-            long long mask = 0x7FFFFFFFFFFFFFFF;
-            value = *reinterpret_cast<double*>(&mask);
+            int64_vs_double mask;
+            mask.i = 0x7FFFFFFFFFFFFFFF;
+            value = mask.d;
         }
         else if (op.getId() == Operation::POWER_CONSTANT) {
             if (stepGroup[step] == -1)
diff --git a/lib/lepton/src/CompiledVectorExpression.cpp b/lib/lepton/src/CompiledVectorExpression.cpp
index c8262b3873..85b492bb3c 100644
--- a/lib/lepton/src/CompiledVectorExpression.cpp
+++ b/lib/lepton/src/CompiledVectorExpression.cpp
@@ -573,6 +573,11 @@ void CompiledVectorExpression::generateTwoArgCall(a64::Compiler& c, arm::Vec& de
 }
 #else
 
+union int_vs_float {
+    int   i;
+    float f;
+};
+
 void CompiledVectorExpression::generateJitCode() {
     const CpuInfo& cpu = CpuInfo::host();
     if (!cpu.hasFeature(CpuFeatures::X86::kAVX))
@@ -624,8 +629,9 @@ void CompiledVectorExpression::generateJitCode() {
         else if (op.getId() == Operation::DELTA)
             value = 1.0;
         else if (op.getId() == Operation::ABS) {
-            int mask = 0x7FFFFFFF;
-            value = *reinterpret_cast<float*>(&mask);
+            int_vs_float mask;
+            mask.i = 0x7FFFFFFF;
+            value = mask.f;
         }
         else if (op.getId() == Operation::POWER_CONSTANT) {
             if (stepGroup[step] == -1)