diff --git a/src/libscotch/library.h b/src/libscotch/library.h
index 1891c19..ecc0533 100644
--- a/src/libscotch/library.h
+++ b/src/libscotch/library.h
@@ -67,6 +67,8 @@
 
 /*+ Integer type. +*/
 
+#include <stdint.h>
+
 typedef DUMMYIDX SCOTCH_Idx;
 
 typedef DUMMYINT SCOTCH_Num;
diff --git a/src/libscotchmetis/library_metis.h b/src/libscotchmetis/library_metis.h
index e6767e1..04e71c3 100644
--- a/src/libscotchmetis/library_metis.h
+++ b/src/libscotchmetis/library_metis.h
@@ -99,6 +99,7 @@ typedef enum {
 */
 
 #ifndef SCOTCH_H                                  /* In case "scotch.h" not included before */
+#include <stdint.h>
 typedef DUMMYINT SCOTCH_Num;
 #endif /* SCOTCH_H */
 
diff --git a/src/libscotchmetis/library_parmetis.h b/src/libscotchmetis/library_parmetis.h
index 6d2f0b0..3c803fc 100644
--- a/src/libscotchmetis/library_parmetis.h
+++ b/src/libscotchmetis/library_parmetis.h
@@ -106,6 +106,7 @@ typedef enum {
 */
 
 #ifndef SCOTCH_H                                  /* In case "scotch.h" not included before */
+#include <stdint.h>
 typedef DUMMYINT SCOTCH_Num;
 #endif /* SCOTCH_H */
 
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<div class='path'>path: <a href='/guix/log/?id=754ee7082bf06ebd34eb41dffea5b6799dcd5389'>root</a>/<a href='/guix/log/gnu.scm?id=754ee7082bf06ebd34eb41dffea5b6799dcd5389'>gnu.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu.scm?id=754ee7082bf06ebd34eb41dffea5b6799dcd5389&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2019-03-24 23:06:11 +0100'>2019-03-24</span></td><td><a href='/guix/commit/gnu.scm?id=db1e2522f6222594fc507ce7a7ba7b1c0ac5037d'>Add (gnu system keyboard).</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-11-08 22:36:20 +0100'>2017-11-08</span></td><td><a href='/guix/commit/gnu.scm?id=c5a4a92f1a796e342b7db4c458f1fdb61ffc8d40'>gnu: Improve error reporting of the use-.*modules macros.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-05-16 14:41:01 +0200'>2017-05-16</span></td><td><a href='/guix/commit/gnu.scm?id=b09a8da4a2e50845a297e041762f3ff9e649c047'>bootloader: Add extlinux support.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>