diff --git a/src/snmalloc/pal/pal_linux.h b/src/snmalloc/pal/pal_linux.h
index ffa16eb..f38377b 100644
--- a/src/snmalloc/pal/pal_linux.h
+++ b/src/snmalloc/pal/pal_linux.h
@@ -19,7 +19,7 @@
 #    include <linux/futex.h>
 #  endif
 
-extern "C" int puts(const char* str);
+#  include <stdio.h>
 
 namespace snmalloc
 {
diff --git a/src/snmalloc/pal/pal_posix.h b/src/snmalloc/pal/pal_posix.h
index 463b710..610bbe2 100644
--- a/src/snmalloc/pal/pal_posix.h
+++ b/src/snmalloc/pal/pal_posix.h
@@ -23,8 +23,6 @@
 #  include <sys/random.h>
 #endif
 
-extern "C" int puts(const char* str);
-
 namespace snmalloc
 {
   /**