diff --git a/Makefile b/Makefile
index 97c8265..243e400 100644
--- a/Makefile
+++ b/Makefile
@@ -30,7 +30,7 @@ INCLUDE = -I ./include
 
 CFLAGS = $(INCLUDE) -Wall -Wextra -Wshadow
 
-LDFLAGS = -lmy -L ../my
+LDFLAGS = -lmy -L ../my -lm
 
 CC = gcc
 
diff --git a/include/my.h b/include/my.h
index 723267c..f15b49d 100644
--- a/include/my.h
+++ b/include/my.h
@@ -6,6 +6,8 @@
 */
 #pragma once
 
+char *my_str_replace(char *str, const char *to_replace, char c);
+
 int my_str_islower_or_num(const char *str);
 
 int count_valid_queens_placements(int n);
diff --git a/tests/tests_realxml.c b/tests/tests_realxml.c
index 3410c74..a23011f 100644
--- a/tests/tests_realxml.c
+++ b/tests/tests_realxml.c
@@ -38,7 +38,7 @@ Test(xml, completewstring)
     cr_assert_eq(n->child->properties, NULL);
     cr_assert_eq(n->child->next, NULL);
     cr_assert_str_eq(n->child->child->name, "pos");
-    cr_assert_str_eq(n->child->child->child->properties->value, "5,5");
+    cr_assert_str_eq(n->child->child->child->properties->value, "5, 5");
     cr_assert_str_eq(n->child->child->next->name, "size");
     cr_assert_str_eq(n->child->child->next->properties->key, "x");
     cr_assert_str_eq(n->child->child->next->properties->value, "500");