diff --git a/tests/tasks/classic/sol/sigsegv.c b/tests/tasks/classic/sol/sigsegv.c
index 94cedfbe4..297c539fc 100644
--- a/tests/tasks/classic/sol/sigsegv.c
+++ b/tests/tasks/classic/sol/sigsegv.c
@@ -1,5 +1,4 @@
-#include <errno.h>
-#include <signal.h>
+#define _GNU_SOURCE
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/mman.h>
diff --git a/tests/tasks/with_constraints_py/sol/sigsegv.c b/tests/tasks/with_constraints_py/sol/sigsegv.c
index 94cedfbe4..297c539fc 100644
--- a/tests/tasks/with_constraints_py/sol/sigsegv.c
+++ b/tests/tasks/with_constraints_py/sol/sigsegv.c
@@ -1,5 +1,4 @@
-#include <errno.h>
-#include <signal.h>
+#define _GNU_SOURCE
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/mman.h>