diff --git a/src/math/j0.c b/src/math/j0.c
index 7a455ea..b893c00 100644
--- a/src/math/j0.c
+++ b/src/math/j0.c
@@ -1,5 +1,3 @@
-#define _DEFAULT_SOURCE 1
-#define _BSD_SOURCE 1
 #define _XOPEN_SOURCE 700
 #include <stdint.h>
 #include <stdio.h>
diff --git a/src/math/j0f.c b/src/math/j0f.c
index c8af0b7..1c06ec8 100644
--- a/src/math/j0f.c
+++ b/src/math/j0f.c
@@ -1,6 +1,5 @@
 #define _DEFAULT_SOURCE 1
 #define _BSD_SOURCE 1
-#define _GNU_SOURCE 1
 #include <stdint.h>
 #include <stdio.h>
 #include "mtest.h"
diff --git a/src/math/j1.c b/src/math/j1.c
index 76af0a3..e1c953b 100644
--- a/src/math/j1.c
+++ b/src/math/j1.c
@@ -1,5 +1,3 @@
-#define _DEFAULT_SOURCE 1
-#define _BSD_SOURCE 1
 #define _XOPEN_SOURCE 700
 #include <stdint.h>
 #include <stdio.h>
diff --git a/src/math/j1f.c b/src/math/j1f.c
index 38e6ab9..640bb10 100644
--- a/src/math/j1f.c
+++ b/src/math/j1f.c
@@ -1,6 +1,5 @@
 #define _DEFAULT_SOURCE 1
 #define _BSD_SOURCE 1
-#define _GNU_SOURCE 1
 #include <stdint.h>
 #include <stdio.h>
 #include "mtest.h"
diff --git a/src/math/jn.c b/src/math/jn.c
index e02db5e..fc1b5d4 100644
--- a/src/math/jn.c
+++ b/src/math/jn.c
@@ -1,4 +1,3 @@
-#define _BSD_SOURCE 1
 #define _XOPEN_SOURCE 700
 #include <stdint.h>
 #include <stdio.h>
diff --git a/src/math/jnf.c b/src/math/jnf.c
index c595d4c..f9330a3 100644
--- a/src/math/jnf.c
+++ b/src/math/jnf.c
@@ -1,6 +1,5 @@
 #define _DEFAULT_SOURCE 1
 #define _BSD_SOURCE 1
-#define _GNU_SOURCE 1
 #include <stdint.h>
 #include <stdio.h>
 #include "mtest.h"
diff --git a/src/math/lgamma.c b/src/math/lgamma.c
index 8de729f..b20a693 100644
--- a/src/math/lgamma.c
+++ b/src/math/lgamma.c
@@ -1,5 +1,3 @@
-#define _DEFAULT_SOURCE 1
-#define _BSD_SOURCE 1
 #define _XOPEN_SOURCE 700
 #include <stdint.h>
 #include <stdio.h>
diff --git a/src/math/scalb.c b/src/math/scalb.c
index 4346cf5..aeb9f77 100644
--- a/src/math/scalb.c
+++ b/src/math/scalb.c
@@ -1,6 +1,5 @@
 #define _DEFAULT_SOURCE 1
 #define _BSD_SOURCE 1
-#define _GNU_SOURCE 1
 #include <stdint.h>
 #include <stdio.h>
 #include "mtest.h"
diff --git a/src/math/scalbf.c b/src/math/scalbf.c
index f042058..ba199a6 100644
--- a/src/math/scalbf.c
+++ b/src/math/scalbf.c
@@ -1,6 +1,5 @@
 #define _DEFAULT_SOURCE 1
 #define _BSD_SOURCE 1
-#define _GNU_SOURCE 1
 #include <stdint.h>
 #include <stdio.h>
 #include "mtest.h"
diff --git a/src/math/y0.c b/src/math/y0.c
index 7470c43..2ea45f7 100644
--- a/src/math/y0.c
+++ b/src/math/y0.c
@@ -1,5 +1,3 @@
-#define _DEFAULT_SOURCE 1
-#define _BSD_SOURCE 1
 #define _XOPEN_SOURCE 700
 #include <stdint.h>
 #include <stdio.h>
diff --git a/src/math/y0f.c b/src/math/y0f.c
index 7bd78a6..4ab4883 100644
--- a/src/math/y0f.c
+++ b/src/math/y0f.c
@@ -1,6 +1,5 @@
 #define _DEFAULT_SOURCE 1
 #define _BSD_SOURCE 1
-#define _GNU_SOURCE 1
 #include <stdint.h>
 #include <stdio.h>
 #include "mtest.h"
diff --git a/src/math/y1.c b/src/math/y1.c
index 8af2a17..e31d67d 100644
--- a/src/math/y1.c
+++ b/src/math/y1.c
@@ -1,5 +1,3 @@
-#define _DEFAULT_SOURCE 1
-#define _BSD_SOURCE 1
 #define _XOPEN_SOURCE 700
 #include <stdint.h>
 #include <stdio.h>
diff --git a/src/math/y1f.c b/src/math/y1f.c
index 41afb3a..31d4485 100644
--- a/src/math/y1f.c
+++ b/src/math/y1f.c
@@ -1,6 +1,5 @@
 #define _DEFAULT_SOURCE 1
 #define _BSD_SOURCE 1
-#define _GNU_SOURCE 1
 #include <stdint.h>
 #include <stdio.h>
 #include "mtest.h"
diff --git a/src/math/yn.c b/src/math/yn.c
index 3ac3214..244dbb8 100644
--- a/src/math/yn.c
+++ b/src/math/yn.c
@@ -1,5 +1,3 @@
-#define _DEFAULT_SOURCE 1
-#define _BSD_SOURCE 1
 #define _XOPEN_SOURCE 700
 #include <stdint.h>
 #include <stdio.h>
diff --git a/src/math/ynf.c b/src/math/ynf.c
index 1a2e7c7..983592b 100644
--- a/src/math/ynf.c
+++ b/src/math/ynf.c
@@ -1,5 +1,5 @@
+#define _DEFAULT_SOURCE 1
 #define _BSD_SOURCE 1
-#define _GNU_SOURCE 1
 #include <stdint.h>
 #include <stdio.h>
 #include "mtest.h"