diff --git a/scipy/integrate/_odepackmodule.c b/scipy/integrate/_odepackmodule.c
index 2b2189f0bd08..0c8067e6520e 100644
--- a/scipy/integrate/_odepackmodule.c
+++ b/scipy/integrate/_odepackmodule.c
@@ -32,6 +32,8 @@ the result tuple when the full_output argument is non-zero.
 
 #include "numpy/arrayobject.h"
 
+#define PyArray_MAX(a,b) (((a)>(b))?(a):(b))
+
 #ifdef HAVE_BLAS_ILP64
 #define F_INT npy_int64
 #define F_INT_NPY NPY_INT64
diff --git a/scipy/signal/_splinemodule.c b/scipy/signal/_splinemodule.c
index 75b497b9866f..b2978be1b4bf 100644
--- a/scipy/signal/_splinemodule.c
+++ b/scipy/signal/_splinemodule.c
@@ -1,5 +1,7 @@
 #include "_splinemodule.h"
 
+#define PyArray_MIN(a,b) (((a)<(b))?(a):(b))
+
 static void
 convert_strides(npy_intp* instrides,npy_intp* convstrides,int size,int N)
 {