diff --git a/pd/src/s_main.c b/pd/src/s_main.c
index 42a2e59f12136c820c5b2391aff20594fd7ad59d..18e384dc5a1ccf41169f40824ea2c1bb0051dfe1 100644
--- a/pd/src/s_main.c
+++ b/pd/src/s_main.c
@@ -299,6 +299,7 @@ int sys_main(int argc, char **argv)
     fprintf(stderr, "Pd-L2Ork: COMPILED FOR DEBUGGING\n");
 #endif
     pd_init();                                  /* start the message system */
+    logpost(NULL, 2, "PD_FLOATSIZE = %lu bits", sizeof(t_float)*8);
     sys_findprogdir(argv[0]);                   /* set sys_progname, guipath */
     for (i = noprefs = 0; i < argc; i++)        /* prescan args for noprefs */
         if (!strcmp(argv[i], "-noprefs"))