diff --git a/core/translate/expr.rs b/core/translate/expr.rs
index 3f82940bb..6520a8b14 100644
--- a/core/translate/expr.rs
+++ b/core/translate/expr.rs
@@ -1850,7 +1850,7 @@ pub fn translate_expr(
         }
         ast::Expr::Literal(lit) => match lit {
             ast::Literal::Numeric(val) => {
-                if val.starts_with("0x") {
+                if val.starts_with("0x") || val.starts_with("0X") {
                     // must be a hex decimal
                     let int_value = i64::from_str_radix(&val[2..], 16)?;
                     program.emit_insn(Insn::Integer {
@@ -1942,15 +1942,14 @@ pub fn translate_expr(
                 // If we don't do this -1 * 9223372036854775808 will overflow and parse will fail
                 // and trigger conversion to Real.
                 if numeric_value == "9223372036854775808"
-                    || numeric_value == "0x7fffffffffffffff"
-                    || numeric_value == "0x7FFFFFFFFFFFFFFF"
+                    || numeric_value.to_lowercase() == "0x7fffffffffffffff"
                 {
                     program.emit_insn(Insn::Integer {
                         value: i64::MIN,
                         dest: target_register,
                     });
                 } else {
-                    if numeric_value.starts_with("0x") {
+                    if numeric_value.starts_with("0x") || numeric_value.starts_with("0X") {
                         // must be a hex decimal
                         let int_value = i64::from_str_radix(&numeric_value[2..], 16)?;
                         program.emit_insn(Insn::Integer {
@@ -1991,7 +1990,7 @@ pub fn translate_expr(
                 Ok(target_register)
             }
             (UnaryOperator::BitwiseNot, ast::Expr::Literal(ast::Literal::Numeric(num_val))) => {
-                if num_val.starts_with("0x") {
+                if num_val.starts_with("0x") || num_val.starts_with("0X") {
                     let int_value = i64::from_str_radix(&num_val[2..], 16)?;
                     program.emit_insn(Insn::Integer {
                         value: !int_value,