diff --git a/include/damage.h b/include/damage.h
index 8a529d2a..88ff8f99 100644
--- a/include/damage.h
+++ b/include/damage.h
@@ -40,7 +40,7 @@
 #define DMINE_HITCHANCE(x) ((double) ( (x) / ((x)+20.0) ) )
 #define DMINE_LHITCHANCE(x) ((double) ( (x) / ((x)+35.0) ) )
 #define MINE_DAMAGE() (22 + random()%21)
-#define MINE_LDAMAGE() (10 + random()%11)
+#define MINE_LDAMAGE() (11 + random()%20)
 #define DTORP_HITCHANCE(range, vis) ((double)(0.9/((range)+1)+(((vis)<6)?(5-(vis))*0.03:0)))
 #define TORP_DAMAGE() (torpedo_damage + (random() % torpedo_damage) + \
 		       (random() % torpedo_damage))
diff --git a/info/Damage.t b/info/Damage.t
index ff133774..ca2cc8f1 100644
--- a/info/Damage.t
+++ b/info/Damage.t
@@ -32,11 +32,11 @@ Whether you get a blam, Blam, or a BLAM depends on the accuracy of the
 plane and the difficulty of the target (see info bomb).
 
 Land mines
-Land mines damage commodities by random(20) and land units by 10 + random(10).
+Land mines damage commodities by random(20) and land units by 10 + random(20).
 If the land unit is an engineer, then the damags is cut in half.
 
 Sea mines
-Sea mines damage ships 22 + random(20).  If the ship can sweep, then
+Sea mines damage ships 21 + random(21).  If the ship can sweep, then
 the damage is cut in half.
 
 Nuclear Detonation
diff --git a/src/lib/subs/lndsub.c b/src/lib/subs/lndsub.c
index a1432fdb..b6a49390 100644
--- a/src/lib/subs/lndsub.c
+++ b/src/lib/subs/lndsub.c
@@ -1019,7 +1019,7 @@ lnd_hit_mine(struct lndstr *lp, struct lchrstr *lcp)
 
     nreport(lp->lnd_own, N_LHIT_MINE, 0, 1);
 
-    m = roll(20) + 10;
+    m = MINE_LDAMAGE();
     if (lcp->l_flags & L_ENGINEER)
 	m /= 2.0;
 
diff --git a/src/lib/subs/shpsub.c b/src/lib/subs/shpsub.c
index 331a6450..10fa5658 100644
--- a/src/lib/subs/shpsub.c
+++ b/src/lib/subs/shpsub.c
@@ -775,7 +775,7 @@ shp_hit_mine(struct shpstr *sp, struct mchrstr *mcp)
 
     nreport(sp->shp_own, N_HIT_MINE, 0, 1);
 
-    m = 22.0 + (double)(random() % 21);
+    m = MINE_DAMAGE();
     if (mcp->m_flags & M_SWEEP)
 	m /= 2.0;