diff --git a/flap/questions/retrolixToX86_64/Makefile b/flap/questions/retrolixToX86_64/Makefile
index f32401e..6cc28ff 100644
--- a/flap/questions/retrolixToX86_64/Makefile
+++ b/flap/questions/retrolixToX86_64/Makefile
@@ -18,7 +18,9 @@ interpret: build
 compilo: build
 	@for f in $(wildcard *.$(TARGET)); do \
 		printf "%s: " $$f; \
-		./$(FLAP) -t elf $$f && \
+		./$(FLAP) -t x86-64 $$f && \
+		gcc -no-pie -o $${f%.*}.elf $${f%.*}.s runtime.c && \
 		./$${f%.*}.elf; \
+		rm $${f%.*}.s; \
 		printf "\n"; \
 	done
diff --git a/flap/questions/retrolixToX86_64/runtime.c b/flap/questions/retrolixToX86_64/runtime.c
new file mode 100644
index 0000000..083c9af
--- /dev/null
+++ b/flap/questions/retrolixToX86_64/runtime.c
@@ -0,0 +1,13 @@
+#include <stdint.h>
+#include <stdio.h>
+
+int64_t add_eight_int(int64_t i1, int64_t i2, int64_t i3, int64_t i4,
+                      int64_t i5, int64_t i6, int64_t i7, int64_t i8) {
+  return i1 + i2 + i3 + i4 + i5 + i6 + i7 + i8;
+}
+
+int64_t observe_int(int64_t n) {
+  printf("%ld", n);
+
+  return n;
+}
diff --git a/flap/runtime/runtime.c b/flap/runtime/runtime.c
index e428878..78d8654 100644
--- a/flap/runtime/runtime.c
+++ b/flap/runtime/runtime.c
@@ -36,6 +36,7 @@ int64_t write_block(intptr_t *block, int64_t n, intptr_t v) {
   return 0;
 }
 
-void add_eight_int(int64_t x1,int64_t x2,int64_t x3,int64_t x4,int64_t x5, int64_t x6,int64_t x7,int64_t x8) {
-  return observe_int(x1+x2+x3+x4+x5+x6+x7+x8);
+void add_eight_int(int64_t x1, int64_t x2, int64_t x3, int64_t x4, int64_t x5,
+                   int64_t x6, int64_t x7, int64_t x8) {
+  return observe_int(x1 + x2 + x3 + x4 + x5 + x6 + x7 + x8);
 }