diff --git a/channels/video/client/video_main.c b/channels/video/client/video_main.c
index f02772418..dba7063bf 100644
--- a/channels/video/client/video_main.c
+++ b/channels/video/client/video_main.c
@@ -1160,7 +1160,7 @@ static UINT video_plugin_initialize(IWTSPlugin* plugin, IWTSVirtualChannelManage
 
 	if (status == CHANNEL_RC_OK)
 		video->context->priv->timerID =
-		    freerdp_timer_add(video->rdpcontext, 20000, timer_cb, video->context, true);
+		    freerdp_timer_add(video->rdpcontext, 20000000, timer_cb, video->context, true);
 	video->initialized = video->context->priv->timerID != 0;
 	if (!video->initialized)
 		status = ERROR_INTERNAL_ERROR;
diff --git a/client/Wayland/wlf_disp.c b/client/Wayland/wlf_disp.c
index df5e5c218..cdeb8bad3 100644
--- a/client/Wayland/wlf_disp.c
+++ b/client/Wayland/wlf_disp.c
@@ -27,7 +27,7 @@
 
 #define TAG CLIENT_TAG("wayland.disp")
 
-#define RESIZE_MIN_DELAY_NS 200000UL /* minimum delay in ns between two resizes */
+#define RESIZE_MIN_DELAY_NS 200000000UL /* minimum delay in ns between two resizes */
 
 struct s_wlfDispContext
 {
diff --git a/client/X11/xf_disp.c b/client/X11/xf_disp.c
index 2022cce64..045a649d7 100644
--- a/client/X11/xf_disp.c
+++ b/client/X11/xf_disp.c
@@ -40,7 +40,7 @@
 
 #include <freerdp/log.h>
 #define TAG CLIENT_TAG("x11disp")
-#define RESIZE_MIN_DELAY_NS 200000UL /* minimum delay in ms between two resizes */
+#define RESIZE_MIN_DELAY_NS 200000000UL /* minimum delay in ms between two resizes */
 
 struct s_xfDispContext
 {
diff --git a/libfreerdp/core/timer.c b/libfreerdp/core/timer.c
index 1153d8b0a..543c35447 100644
--- a/libfreerdp/core/timer.c
+++ b/libfreerdp/core/timer.c
@@ -217,7 +217,7 @@ static DWORD WINAPI timer_thread(LPVOID arg)
 		}
 
 		const uint64_t diff = next - now;
-		const uint64_t diffMS = diff / 1000;
+		const uint64_t diffMS = diff / 1000000ull;
 		timeout = INFINITE;
 		if (diffMS < INFINITE)
 			timeout = (uint32_t)diffMS;