diff --git a/src/include/ngspice/tskdefs.h b/src/include/ngspice/tskdefs.h
index e5167dce0..972c9286e 100644
--- a/src/include/ngspice/tskdefs.h
+++ b/src/include/ngspice/tskdefs.h
@@ -41,7 +41,7 @@ struct TSKtask {
     int TSKnumSrcSteps;     /* number of steps for source stepping */
     int TSKnumGminSteps;    /* number of steps for Gmin stepping */
     double TSKgminFactor;   /* factor for Gmin stepping */
-    double TSKminBreak;
+    double TSKminBreak;     /* minimum time difference between breakpoints */
     double TSKabstol;
     double TSKpivotAbsTol;
     double TSKpivotRelTol;