diff --git a/src/DAMASK_interface.f90 b/src/DAMASK_interface.f90
index 41f421eb8..f664eb458 100644
--- a/src/DAMASK_interface.f90
+++ b/src/DAMASK_interface.f90
@@ -392,7 +392,7 @@ end function makeRelativePath
 subroutine catchSIGTERM(signal) bind(C)
 
   integer(C_INT), value :: signal
-  interface_SIGTERM = .true.
+  call interface_setSIGTERM(.true.)
 
   print'(a,i0,a)', ' received signal ',signal, ', set SIGTERM=TRUE'
 
@@ -417,7 +417,7 @@ end subroutine interface_setSIGTERM
 subroutine catchSIGUSR1(signal) bind(C)
 
   integer(C_INT), value :: signal
-  interface_SIGUSR1 = .true.
+  call interface_setSIGUSR1(.true.)
 
   print'(a,i0,a)', ' received signal ',signal, ', set SIGUSR1=TRUE'
 
@@ -442,7 +442,7 @@ end subroutine interface_setSIGUSR1
 subroutine catchSIGUSR2(signal) bind(C)
 
   integer(C_INT), value :: signal
-  interface_SIGUSR2 = .true.
+  call interface_setSIGUSR2(.true.)
 
   print'(a,i0,a)', ' received signal ',signal, ', set SIGUSR2=TRUE'