diff --git a/sources/forcing.F90 b/sources/forcing.F90
index af248b5..2a9f53e 100644
--- a/sources/forcing.F90
+++ b/sources/forcing.F90
@@ -995,7 +995,12 @@ module forcing
 
 !-------------------------------------------------------------------------------
 !
-    if (t < tinj_start .or. t > tinj_stop) return
+    if (t < tinj_start .or. t > tinj_stop) then
+      arms = 0.0d+00
+      dinj = 0.0d+00
+      rinj = 0.0d+00
+      return
+    end if
 
 ! calculate the number of eddies to be injected during this interval
 !
@@ -1079,7 +1084,12 @@ module forcing
 
 !-------------------------------------------------------------------------------
 !
-    if (t < tinj_start .or. t > tinj_stop) return
+    if (t < tinj_start .or. t > tinj_stop) then
+      arms = 0.0d+00
+      dinj = 0.0d+00
+      rinj = 0.0d+00
+      return
+    end if
 
 ! calculate drift and diffusion coefficients
 !
@@ -1166,7 +1176,12 @@ module forcing
 
 !-------------------------------------------------------------------------------
 !
-    if (t < tinj_start .or. t > tinj_stop) return
+    if (t < tinj_start .or. t > tinj_stop) then
+      arms = 0.0d+00
+      dinj = 0.0d+00
+      rinj = 0.0d+00
+      return
+    end if
 
 ! determine velocify coefficients in Fourier space
 !