diff --git a/libs/libc/src/stdio.cpp b/libs/libc/src/stdio.cpp
index a59357ad..7768dc77 100644
--- a/libs/libc/src/stdio.cpp
+++ b/libs/libc/src/stdio.cpp
@@ -20,9 +20,13 @@ extern "C"
     {
         NOT_IMPLEMENTED("fopen");
     }
-    int fprintf(FILE*, const char*, ...)
+    int fprintf(FILE*, const char* format, ...) // FIXME: Make fprintf print to the selected file instead of stdout.
     {
-        NOT_IMPLEMENTED("fprintf");
+        va_list ap;
+        va_start(ap, format);
+        int written = vprintf(format, ap);
+        va_end(ap);
+        return written;
     }
     size_t fread(void*, size_t, size_t, FILE*)
     {
@@ -44,9 +48,10 @@ extern "C"
     {
         NOT_IMPLEMENTED("setbuf");
     }
-    int vfprintf(FILE*, const char*, va_list)
+    int vfprintf(FILE*, const char* format,
+                 va_list ap) // FIXME: Make vfprintf print to the selected file instead of stdout.
     {
-        NOT_IMPLEMENTED("vfprintf");
+        return vprintf(format, ap);
     }
     int puts(const char* s)
     {