diff --git a/src/others/3.1.6_heap_exploit/Makefile b/src/others/3.1.6_heap_exploit/Makefile
index 68012f7..835669d 100644
--- a/src/others/3.1.6_heap_exploit/Makefile
+++ b/src/others/3.1.6_heap_exploit/Makefile
@@ -1,8 +1,9 @@
-PROGRAMS = fastbin_dup tcache_double-free fastbin_dup_into_stack fastbin_dup_consolidate unsafe_unlink house_of_spirit poison_null_byte malloc_playground first_fit house_of_lore tcache_house_of_lore overlapping_chunks overlapping_chunks_2 house_of_force unsorted_bin_attack unsorted_bin_into_stack tcache_unsorted_bin_attack house_of_einherjar house_of_orange
+PROGRAMS = fastbin_dup tcache_double-free fastbin_dup_into_stack fastbin_dup_consolidate unsafe_unlink house_of_spirit poison_null_byte first_fit house_of_lore tcache_house_of_lore overlapping_chunks overlapping_chunks_2 house_of_force unsorted_bin_attack unsorted_bin_into_stack tcache_unsorted_bin_attack house_of_einherjar house_of_orange
+
 CFLAGS += -std=c99 -g
 
 # CFLAGS += -fsanitize=address
 
 all: $(PROGRAMS)
 clean:
-        rm -f $(PROGRAMS)
+	rm -f $(PROGRAMS)
diff --git a/src/others/3.1.6_heap_exploit/house_of_orange.c b/src/others/3.1.6_heap_exploit/house_of_orange.c
index a71173a..3fc8f09 100644
--- a/src/others/3.1.6_heap_exploit/house_of_orange.c
+++ b/src/others/3.1.6_heap_exploit/house_of_orange.c
@@ -2,6 +2,8 @@
 #include <stdlib.h>
 #include <string.h>
 
+typedef FILE _IO_FILE;
+
 int winner (char *ptr);
 
 int main() {