diff --git a/README.md b/README.md
index 85adfd5..adaafdc 100644
--- a/README.md
+++ b/README.md
@@ -110,7 +110,7 @@ top_bar_title=yes
 # pause video on clicks shorter than this number of milliseconds, 0 to disable
 pause_on_click_shorter_than=0
 # flash duration in milliseconds used by `flash-{element}` commands
-flash_duration=400
+flash_duration=1000
 # distances in pixels below which elements are fully faded in/out
 proximity_in=40
 proximity_out=120
diff --git a/uosc.conf b/uosc.conf
index d53fb70..b3eeb7a 100644
--- a/uosc.conf
+++ b/uosc.conf
@@ -58,7 +58,7 @@ top_bar_title=yes
 # pause video on clicks shorter than this number of milliseconds, 0 to disable
 pause_on_click_shorter_than=0
 # flash duration in milliseconds used by `flash-{element}` commands
-flash_duration=400
+flash_duration=1000
 # distances in pixels below which elements are fully faded in/out
 proximity_in=40
 proximity_out=120
diff --git a/uosc.lua b/uosc.lua
index c47f74c..d786944 100644
--- a/uosc.lua
+++ b/uosc.lua
@@ -79,7 +79,7 @@ top_bar_title=yes
 # pause video on clicks shorter than this number of milliseconds, 0 to disable
 pause_on_click_shorter_than=0
 # flash duration in milliseconds used by `flash-{element}` commands
-flash_duration=400
+flash_duration=1000
 # distances in pixels below which elements are fully faded in/out
 proximity_in=40
 proximity_out=120
@@ -237,7 +237,7 @@ local options = {
 	top_bar_title = true,
 
 	pause_on_click_shorter_than = 0,
-	flash_duration = 400,
+	flash_duration = 1000,
 	proximity_in = 40,
 	proximity_out = 120,
 	color_foreground = 'ffffff',