fix some more warnings pointed out by clang

1 files changed, 2 insertions, 2 deletions

diff --git a/src/test.c b/src/test.c
index 936ccd5..5513d33 100644
--- a/src/test.c
+++ b/src/test.c
@@ -1463,7 +1463,7 @@ int test_quad(char *err)
         }
 
         if (quad(&ev, fit_pos, &fit_t0, 10000)) {
-            sprintf(err, quad_err);
+            sprintf(err, "%s", quad_err);
             goto err;
         }
 
@@ -1568,7 +1568,7 @@ int test_quad_noise(char *err)
         }
 
         if (quad(&ev, fit_pos, &fit_t0, 10000)) {
-            sprintf(err, quad_err);
+            sprintf(err, "%s", quad_err);
             goto err;
         }