diff --git a/gcc/testsuite/gfortran.dg/PR100914.c b/gcc/testsuite/gfortran.dg/PR100914.c
index c6bd9733e0b..f5db8164eb1 100644
--- a/gcc/testsuite/gfortran.dg/PR100914.c
+++ b/gcc/testsuite/gfortran.dg/PR100914.c
@@ -5,7 +5,7 @@
 #include <stdbool.h>
 #include <stdio.h>
 #include <math.h>
-#include <quadmath.h>
+#include "../../../libquadmath/quadmath.h"
 
 #include <ISO_Fortran_binding.h>