diff --git a/libctf/ChangeLog b/libctf/ChangeLog
index 27652b89af7..ea34bae8560 100644
--- a/libctf/ChangeLog
+++ b/libctf/ChangeLog
@@ -1,3 +1,7 @@
+2019-10-16  Simon Marchi  <simon.marchi@polymtl.ca>
+
+	* swap.h (bswap_16, bswap_32, bswap_64): Make static.
+
 2019-09-30  Nick Alcock  <nick.alcock@oracle.com>
 
 	* ctf-open.c (ctf_bufopen_internal): Fix tabdamage.
diff --git a/libctf/swap.h b/libctf/swap.h
index e75e8d408a9..ac62ac78d14 100644
--- a/libctf/swap.h
+++ b/libctf/swap.h
@@ -28,13 +28,13 @@
 #else
 
 /* Provide our own versions of the byteswap functions.  */
-inline uint16_t
+static inline uint16_t
 bswap_16 (uint16_t v)
 {
   return ((v >> 8) & 0xff) | ((v & 0xff) << 8);
 }
 
-inline uint32_t
+static inline uint32_t
 bswap_32 (uint32_t v)
 {
   return (  ((v & 0xff000000) >> 24)
@@ -49,7 +49,7 @@ bswap_identity_64 (uint64_t v)
   return v;
 }
 
-inline uint64_t
+static inline uint64_t
 bswap_64 (uint64_t v)
 {
   return (  ((v & 0xff00000000000000ULL) >> 56)