diff --git a/fmpr.h b/fmpr.h
index 2204d72e..c6a8c342 100644
--- a/fmpr.h
+++ b/fmpr.h
@@ -22,7 +22,11 @@
 #include "flint/flint.h"
 #include "flint/fmpz.h"
 #include "flint/fmpq.h"
+#if __FLINT_RELEASE < 20600
 #include "flint/config.h"
+#else
+#include "flint/flint-config.h"
+#endif
 #include "fmpz_extras.h"
 
 #ifndef flint_abort
diff --git a/fmpz_extras.h b/fmpz_extras.h
index 4fd0538f..486e28c8 100644
--- a/fmpz_extras.h
+++ b/fmpz_extras.h
@@ -43,6 +43,8 @@ fmpz_add_inline(fmpz_t z, const fmpz_t x, const fmpz_t y)
         fmpz_add(z, x, y);
 }
 
+#if __FLINT_RELEASE < 20600
+
 static __inline__ void
 fmpz_add_si(fmpz_t z, const fmpz_t x, slong y)
 {
@@ -61,6 +63,8 @@ fmpz_sub_si(fmpz_t z, const fmpz_t x, slong y)
         fmpz_add_ui(z, x, -y);
 }
 
+#endif
+
 static __inline__ void
 fmpz_add_si_inline(fmpz_t z, const fmpz_t x, slong y)
 {