diff --git a/runtime/rts.c b/runtime/rts.c
index 0ddd90f..4cf41e5 100644
--- a/runtime/rts.c
+++ b/runtime/rts.c
@@ -1,8 +1,9 @@
 #include <stdint.h>
 #include <stdio.h>
+#include <inttypes.h>
 
-void print(char *_ignore, char *variable_name, uint64_t value) {
-    printf("%s = %llii64\n", variable_name, value);
+void print(char *_ignore, char *variable_name, int64_t value) {
+    printf("%s = %" PRId64 "i64\n", variable_name, value);
 }
 
 void caller() {
diff --git a/src/backend/eval.rs b/src/backend/eval.rs
index 1218507..a57c625 100644
--- a/src/backend/eval.rs
+++ b/src/backend/eval.rs
@@ -83,6 +83,9 @@ proptest::proptest! {
 
         let basic_result = program.eval();
 
+        #[cfg(target_family="windows")]
+        let basic_result = basic_result.map(|x| x.replace('\n', "\r\n"));
+
         if !matches!(basic_result, Err(EvalError::PrimOp(PrimOpError::MathFailure(_)))) {
             let compiled_result = Backend::<ObjectModule>::eval(program);
             assert_eq!(basic_result, compiled_result);