diff --git a/lldb/test/API/commands/target/basic/a.c b/lldb/test/API/commands/target/basic/a.c
index b8157275f1a9..9ce587e41453 100644
--- a/lldb/test/API/commands/target/basic/a.c
+++ b/lldb/test/API/commands/target/basic/a.c
@@ -1,6 +1,8 @@
+#include <stdio.h>
+
 int main(int argc, const char* argv[])
 {
     int *null_ptr = 0;
     printf("Hello, segfault!\n");
     printf("Now crash %d\n", *null_ptr); // Crash here.
 }
diff --git a/lldb/test/API/lang/c/global_variables/main.c b/lldb/test/API/lang/c/global_variables/main.c
index 864f094edd48..eb7720a6b048 100644
--- a/lldb/test/API/lang/c/global_variables/main.c
+++ b/lldb/test/API/lang/c/global_variables/main.c
@@ -1,15 +1,17 @@
+#include <stdio.h>
+
 int g_common_1; // Not initialized on purpose to cause it to be undefined external in .o file
 int g_file_global_int = 42;
 static const int g_file_static_int = 2;
 const char *g_file_global_cstr = "g_file_global_cstr";
 static const char *g_file_static_cstr = "g_file_static_cstr";
 int *g_ptr = &g_file_global_int;
 
 extern int g_a;
 int main (int argc, char const *argv[])
 {
     g_common_1 = g_file_global_int / g_file_static_int;
     static const char *g_func_static_cstr = "g_func_static_cstr";
     printf ("%s %s\n", g_file_global_cstr, g_file_static_cstr);
     return *g_file_global_cstr + *g_file_static_cstr + g_file_global_int + g_a + g_common_1 + *g_ptr; // Set break point at this line.  //// break $source:$line; continue; var -global g_a -global g_global_int
 }