diff --git a/src/lib/commands/prod.c b/src/lib/commands/prod.c
index 38a52b72..d2fbc754 100644
--- a/src/lib/commands/prod.c
+++ b/src/lib/commands/prod.c
@@ -141,7 +141,7 @@ prod(void)
 	    }
 	    if (work > 999) work = 999;
  	}
-	bwork = (int)((double)work / 2.0);
+	bwork = work / 2;
 
 	if (sect.sct_off)
 	    continue;
@@ -207,7 +207,7 @@ prod(void)
 	    bwork -= twork;
 	    eff += twork;
 	}
-	work = work / 2 + bwork;
+	work = (work + 1) / 2 + bwork;
 	if (eff < 60 || (type != SCT_ENLIST && eff < 61))
 	    continue;
 
diff --git a/src/lib/update/sect.c b/src/lib/update/sect.c
index 4ddd27b6..e9247813 100644
--- a/src/lib/update/sect.c
+++ b/src/lib/update/sect.c
@@ -91,7 +91,7 @@ upd_buildeff(struct natstr *np, register struct sctstr *sp, int *workp,
 	     short *vec, int etu, int *desig, int sctwork, int *cost)
 {
     register int work_cost = 0;
-    int buildeff_work = (int)(*workp / 2);
+    int buildeff_work = *workp / 2;
     int n, hcms, lcms, neweff;
     u_char old_type = *desig;
 
@@ -159,7 +159,7 @@ upd_buildeff(struct natstr *np, register struct sctstr *sp, int *workp,
 	    }
 	}
     }
-    *workp = *workp / 2 + buildeff_work;
+    *workp = (*workp + 1) / 2 - buildeff_work;
 
     return neweff;
 }