diff --git a/libs/klib/Makefile b/libs/klib/Makefile
index b85722a0..5fbc1e84 100644
--- a/libs/klib/Makefile
+++ b/libs/klib/Makefile
@@ -2,5 +2,6 @@ NAME = klib
 SRCS = src/printk.c \
        src/string.c \
        src/cpp.c \
+       src/stdlib.c \
        src/io.c
 include $(AM_HOME)/Makefile.lib
diff --git a/libs/klib/src/stdlib.c b/libs/klib/src/stdlib.c
new file mode 100644
index 00000000..d9142876
--- /dev/null
+++ b/libs/klib/src/stdlib.c
@@ -0,0 +1,11 @@
+static unsigned long int next = 1;
+
+int rand(void) {
+  // RAND_MAX assumed to be 32767
+  next = next * 1103515245 + 12345;
+  return (unsigned int)(next/65536) % 32768;
+}
+
+void srand(unsigned int seed) {
+  next = seed;
+}