diff --git a/external/Rmath/src/sunif.c b/external/Rmath/src/sunif.c
index 42e544bf46be9..e7c4b7f5499e0 100644
--- a/external/Rmath/src/sunif.c
+++ b/external/Rmath/src/sunif.c
@@ -20,7 +20,6 @@
 
 /* A version of Marsaglia-MultiCarry */
 
-/*
 static unsigned int I1=1234, I2=5678;
 
 void set_seed(unsigned int i1, unsigned int i2)
@@ -40,11 +39,12 @@ double unif_rand(void)
     I2= 18000*(I2 & 0177777) + (I2>>16);
     return ((I1 << 16)^(I2 & 0177777)) * 2.328306437080797e-10; // in [0,1)
 }
-*/
 
-#include "../../random/dsfmt-2.1/dSFMT.c"
+/*
+#include "../../random/dsfmt-2.1/dSFMT.h"
 
 double unif_rand(void)
 {
     return dsfmt_gv_genrand_close_open();
 }
+*/