diff --git a/BUK-M2/Nasal/fdm.nas b/BUK-M2/Nasal/fdm.nas
index 0421fce..1882ac3 100644
--- a/BUK-M2/Nasal/fdm.nas
+++ b/BUK-M2/Nasal/fdm.nas
@@ -14,7 +14,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #io.include("Aircraft/ExpansionPack/Nasal/init.nas");
-
+srand();# seed the random generator with systime
 #with("updateloop");
 
 # Number of iterations per second
diff --git a/MIM-104D/Nasal/fdm.nas b/MIM-104D/Nasal/fdm.nas
index 8469eb6..2332516 100644
--- a/MIM-104D/Nasal/fdm.nas
+++ b/MIM-104D/Nasal/fdm.nas
@@ -14,7 +14,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #io.include("Aircraft/ExpansionPack/Nasal/init.nas");
-
+srand();# seed the random generator with systime
 #with("updateloop");
 
 # Number of iterations per second
diff --git a/S-75/Nasal/fdm.nas b/S-75/Nasal/fdm.nas
index feff5d8..c16c1f2 100644
--- a/S-75/Nasal/fdm.nas
+++ b/S-75/Nasal/fdm.nas
@@ -14,7 +14,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #io.include("Aircraft/ExpansionPack/Nasal/init.nas");
-
+srand();# seed the random generator with systime
 #with("updateloop");
 
 # Number of iterations per second
diff --git a/SA-6/Nasal/fdm.nas b/SA-6/Nasal/fdm.nas
index 9145b3e..03504ef 100644
--- a/SA-6/Nasal/fdm.nas
+++ b/SA-6/Nasal/fdm.nas
@@ -14,7 +14,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #io.include("Aircraft/ExpansionPack/Nasal/init.nas");
-
+srand();# seed the random generator with systime
 #with("updateloop");
 
 # Number of iterations per second