diff --git a/libc/getdelim.cpp b/libc/getdelim.cpp
index c38e201d..0358fadc 100644
--- a/libc/getdelim.cpp
+++ b/libc/getdelim.cpp
@@ -26,7 +26,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-ssize_t getdelim(char** lineptr, size_t* n, int delim, FILE* fp)
+extern "C" ssize_t getdelim(char** lineptr, size_t* n, int delim, FILE* fp)
 {
 	if ( !lineptr || (*lineptr && !n) || !fp ) { errno = EINVAL; return -1; }
 	const size_t DEFAULT_BUFSIZE = 32UL;
diff --git a/libc/getline.cpp b/libc/getline.cpp
index 9366cd8c..c54c48f5 100644
--- a/libc/getline.cpp
+++ b/libc/getline.cpp
@@ -24,7 +24,7 @@
 
 #include <stdio.h>
 
-ssize_t getline(char** lineptr, size_t* n, FILE* fp)
+extern "C" ssize_t getline(char** lineptr, size_t* n, FILE* fp)
 {
 	return getdelim(lineptr, n, '\n', fp);
 }