diff --git a/src/vm/wren_compiler.c b/src/vm/wren_compiler.c
index 5cb34063..95c470dd 100644
--- a/src/vm/wren_compiler.c
+++ b/src/vm/wren_compiler.c
@@ -713,11 +713,18 @@ static int readHexDigit(Parser* parser)
 }
 
 // Parses the numeric value of the current token.
-static void makeNumber(Parser* parser)
+static void makeNumber(Parser* parser, bool isHex)
 {
   errno = 0;
 
-  parser->next.value = NUM_VAL(strtod(parser->tokenStart, NULL));
+  if (isHex)
+  {
+    parser->next.value = NUM_VAL((double)strtoll(parser->tokenStart, NULL, 16));
+  }
+  else
+  {
+    parser->next.value = NUM_VAL(strtod(parser->tokenStart, NULL));
+  }
   
   if (errno == ERANGE)
   {
@@ -740,7 +747,7 @@ static void readHexNumber(Parser* parser)
   // Iterate over all the valid hexadecimal digits found.
   while (readHexDigit(parser) != -1) continue;
 
-  makeNumber(parser);
+  makeNumber(parser, true);
 }
 
 // Finishes lexing a number literal.
@@ -773,7 +780,7 @@ static void readNumber(Parser* parser)
     while (isDigit(peekChar(parser))) nextChar(parser);
   }
 
-  makeNumber(parser);
+  makeNumber(parser, false);
 }
 
 // Finishes lexing an identifier. Handles reserved words.