diff --git a/project/config/cfgdefs.sh b/project/config/cfgdefs.sh
index 135f10e..233af67 100644
--- a/project/config/cfgdefs.sh
+++ b/project/config/cfgdefs.sh
@@ -151,6 +151,7 @@ cfgdefs_perform_common_tests()
 	cfgtest_header_presence 'stdatomic.h'
 	cfgtest_header_presence 'endian.h'
 	cfgtest_header_presence 'net/if.h'
+	cfgtest_header_presence 'pthread.h'
 	cfgtest_header_presence 'sched.h'
 	cfgtest_header_presence 'spawn.h'
 	cfgtest_header_presence 'sys/ioctl.h'