diff --git a/src/coreclr/interpreter/intops.h b/src/coreclr/interpreter/intops.h
index 334242321d96d5..6886400ac35fe0 100644
--- a/src/coreclr/interpreter/intops.h
+++ b/src/coreclr/interpreter/intops.h
@@ -98,7 +98,7 @@ inline int32_t getI4LittleEndian(const uint8_t* ptr)
 
 inline int64_t getI8LittleEndian(const uint8_t* ptr)
 {
-    return (int64_t)getI4LittleEndian(ptr) | ((int64_t)getI4LittleEndian(ptr + 4)) << 32;
+    return (int64_t)getU4LittleEndian(ptr) | ((int64_t)getI4LittleEndian(ptr + 4)) << 32;
 }
 
 inline float getR4LittleEndian(const uint8_t* ptr)
diff --git a/src/coreclr/vm/interpexec.cpp b/src/coreclr/vm/interpexec.cpp
index 15d91a4cf5398c..e03a8870676c10 100644
--- a/src/coreclr/vm/interpexec.cpp
+++ b/src/coreclr/vm/interpexec.cpp
@@ -143,7 +143,7 @@ void InterpExecMethod(InterpreterFrame *pInterpreterFrame, InterpMethodContextFr
                     ip += 2;
                     break;
                 case INTOP_LDC_I8:
-                    LOCAL_VAR(ip[1], int64_t) = (int64_t)ip[2] + ((int64_t)ip[3] << 32);
+                    LOCAL_VAR(ip[1], int64_t) = (int64_t)(uint32_t)ip[2] + ((int64_t)ip[3] << 32);
                     ip += 4;
                     break;
                 case INTOP_LDC_R4:
@@ -151,7 +151,7 @@ void InterpExecMethod(InterpreterFrame *pInterpreterFrame, InterpMethodContextFr
                     ip += 3;
                     break;
                 case INTOP_LDC_R8:
-                    LOCAL_VAR(ip[1], int64_t) = (int64_t)ip[2] + ((int64_t)ip[3] << 32);
+                    LOCAL_VAR(ip[1], int64_t) = (int64_t)(uint32_t)ip[2] + ((int64_t)ip[3] << 32);
                     ip += 4;
                     break;
                 case INTOP_LDPTR: