diff --git a/lf.c b/lf.c
index 10bd90c..fbf8b13 100644
--- a/lf.c
+++ b/lf.c
@@ -15531,6 +15531,7 @@ void addraceclassflags(flagpile_t *fp, enum RACECLASS rcid, enum RACE rid) {
 		addflag(fp, F_AQUATIC, B_TRUE, NA, NA, NULL);
 		addflag(fp, F_BREATHWATER, B_TRUE, NA, NA, NULL);
 		addflag(fp, F_DTIMMUNE, DT_WATER, NA, NA, NULL);
+		addflag(fp, F_STABILITY, B_TRUE, NA, NA, NULL);
 	} else if (rcid == RC_DEMON) {
 		addflag(fp, F_NOBREATH, B_TRUE, NA, NA, NULL);
 		addflag(fp, F_DISEASEIMMUNE, B_TRUE, NA, NA, NULL);
@@ -15542,6 +15543,7 @@ void addraceclassflags(flagpile_t *fp, enum RACECLASS rcid, enum RACE rid) {
 	} else if (rcid == RC_INSECT) {
 		addflag(fp, F_NOSTAM, B_TRUE, NA, NA, NULL);
 		addflag(fp, F_DISEASEIMMUNE, B_TRUE, NA, NA, NULL);
+		addflag(fp, F_STABILITY, B_TRUE, NA, NA, NULL);
 	} else if (rcid == RC_DRAGON) {
 		// wyrms hate hydras
 		if (rid != R_HYDRA) {