diff --git a/src/demon/win32/demon_core_win32.c b/src/demon/win32/demon_core_win32.c
index 5c93e2d2..ea1f3118 100644
--- a/src/demon/win32/demon_core_win32.c
+++ b/src/demon/win32/demon_core_win32.c
@@ -2882,7 +2882,7 @@ dmn_ctrl_run(Arena *arena, DMN_CtrlCtx *ctx, DMN_RunCtrls *ctrls)
             {
               single_step_thread_ctx = 0;
             }
-            if(ctx != 0)
+            if(single_step_thread_ctx != 0)
             {
               U64 rflags = single_step_thread_ctx->EFlags|0x2;
               U64 new_rflags = rflags & ~0x100;