diff --git a/arb_fmpz_poly.h b/arb_fmpz_poly.h
index 25603e67..32a6ea02 100644
--- a/arb_fmpz_poly.h
+++ b/arb_fmpz_poly.h
@@ -26,6 +26,10 @@
 #include "arb_poly.h"
 #include "acb_poly.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define ARB_FMPZ_POLY_ROOTS_VERBOSE 1
 
 void _arb_fmpz_poly_evaluate_acb_horner(acb_t res, const fmpz * f, slong len, const acb_t x, slong prec);
@@ -55,4 +59,8 @@ void arb_fmpz_poly_cos_minpoly(fmpz_poly_t res, ulong n)
 
 void arb_fmpz_poly_gauss_period_minpoly(fmpz_poly_t res, ulong q, ulong n);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif
diff --git a/dlog.h b/dlog.h
index 4453f277..a00f017e 100644
--- a/dlog.h
+++ b/dlog.h
@@ -29,6 +29,10 @@
 #include "flint/ulong_extras.h"
 #include "flint/nmod_vec.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 enum
 {
     DLOG_MODPE, DLOG_CRT, DLOG_POWER, DLOG_BSGS, DLOG_TABLE, DLOG_23
@@ -272,4 +276,8 @@ void dlog_vec_sieve_precomp(ulong *v, ulong nv, dlog_precomp_t pre,  ulong a, ul
 void dlog_vec_sieve_add_precomp(ulong *v, ulong nv, dlog_precomp_t pre, ulong a, ulong va, nmod_t mod, ulong na, nmod_t order);
 void dlog_vec_add_precomp(ulong *v, ulong nv, dlog_precomp_t pre, ulong a, ulong va, nmod_t mod, ulong na, nmod_t order);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif