diff --git a/test/tests.h b/test/tests.h
index 9106ba6..6ceadf9 100644
--- a/test/tests.h
+++ b/test/tests.h
@@ -779,6 +779,7 @@ TEST_DECLARE(glmc_vec3_isvalid)
 TEST_DECLARE(glmc_vec3_sign)
 TEST_DECLARE(glmc_vec3_abs)
 TEST_DECLARE(glmc_vec3_fract)
+TEST_DECLARE(glmc_vec3_floor)
 TEST_DECLARE(glmc_vec3_mods)
 TEST_DECLARE(glmc_vec3_hadd)
 TEST_DECLARE(glmc_vec3_sqrt)
@@ -1977,6 +1978,7 @@ TEST_LIST {
   TEST_ENTRY(glmc_vec3_sign)
   TEST_ENTRY(glmc_vec3_abs)
   TEST_ENTRY(glmc_vec3_fract)
+  TEST_ENTRY(glmc_vec3_floor)
   TEST_ENTRY(glmc_vec3_mods)
   TEST_ENTRY(glmc_vec3_hadd)
   TEST_ENTRY(glmc_vec3_sqrt)