diff --git a/src/tests/system/libroot/posix/posixtestsuite/LDFLAGS b/src/tests/system/libroot/posix/posixtestsuite/LDFLAGS
index aa701d911d..6c0149e09e 100644
--- a/src/tests/system/libroot/posix/posixtestsuite/LDFLAGS
+++ b/src/tests/system/libroot/posix/posixtestsuite/LDFLAGS
@@ -14,3 +14,5 @@
 # allow for the NPTL-specific compilation (used in some test cases)
 # Note: this sometimes require the package nptl-devel.*.rpm to be installed.
 #-I /usr/include/nptl -L /usr/lib/nptl -D_XOPEN_SOURCE=600 -lpthread -lrt -lm
+
+-lposix_error_mapper -DB_USE_POSITIVE_POSIX_ERRORS