diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index 50d136f628..1e56e5a508 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -2433,9 +2433,9 @@ scrollbar {
 
   &.horizontal {
     button {
-      &.down { -gtk-icon-source: -gtk-icontheme('pan-right-symbolic'); }
+      &.down { -gtk-icon-source: -gtk-icontheme('pan-end-symbolic'); }
 
-      &.up { -gtk-icon-source: -gtk-icontheme('pan-left-symbolic'); }
+      &.up { -gtk-icon-source: -gtk-icontheme('pan-start-symbolic'); }
     }
   }
 }
diff --git a/gtk/theme/Adwaita/gtk-contained-dark.css b/gtk/theme/Adwaita/gtk-contained-dark.css
index 2aa038f0e1..f5bcde2acd 100644
--- a/gtk/theme/Adwaita/gtk-contained-dark.css
+++ b/gtk/theme/Adwaita/gtk-contained-dark.css
@@ -2685,9 +2685,9 @@ scrollbar {
   scrollbar.vertical button.up {
     -gtk-icon-source: -gtk-icontheme("pan-up-symbolic"); }
   scrollbar.horizontal button.down {
-    -gtk-icon-source: -gtk-icontheme("pan-right-symbolic"); }
+    -gtk-icon-source: -gtk-icontheme("pan-end-symbolic"); }
   scrollbar.horizontal button.up {
-    -gtk-icon-source: -gtk-icontheme("pan-left-symbolic"); }
+    -gtk-icon-source: -gtk-icontheme("pan-start-symbolic"); }
 
 treeview ~ scrollbar.vertical {
   border-top: 1px solid #1b1f20;
diff --git a/gtk/theme/Adwaita/gtk-contained.css b/gtk/theme/Adwaita/gtk-contained.css
index 8d774835e4..34219889db 100644
--- a/gtk/theme/Adwaita/gtk-contained.css
+++ b/gtk/theme/Adwaita/gtk-contained.css
@@ -2700,9 +2700,9 @@ scrollbar {
   scrollbar.vertical button.up {
     -gtk-icon-source: -gtk-icontheme("pan-up-symbolic"); }
   scrollbar.horizontal button.down {
-    -gtk-icon-source: -gtk-icontheme("pan-right-symbolic"); }
+    -gtk-icon-source: -gtk-icontheme("pan-end-symbolic"); }
   scrollbar.horizontal button.up {
-    -gtk-icon-source: -gtk-icontheme("pan-left-symbolic"); }
+    -gtk-icon-source: -gtk-icontheme("pan-start-symbolic"); }
 
 treeview ~ scrollbar.vertical {
   border-top: 1px solid #b6b6b3;
diff --git a/gtk/theme/HighContrast/_common.scss b/gtk/theme/HighContrast/_common.scss
index 7cedff14af..c30f1aae5c 100644
--- a/gtk/theme/HighContrast/_common.scss
+++ b/gtk/theme/HighContrast/_common.scss
@@ -1943,9 +1943,9 @@ scrollbar {
 
   &.horizontal {
     button {
-      &.down { -gtk-icon-source: -gtk-icontheme('pan-right-symbolic'); }
+      &.down { -gtk-icon-source: -gtk-icontheme('pan-end-symbolic'); }
 
-      &.up { -gtk-icon-source: -gtk-icontheme('pan-left-symbolic'); }
+      &.up { -gtk-icon-source: -gtk-icontheme('pan-start-symbolic'); }
     }
   }
 }
diff --git a/gtk/theme/HighContrast/gtk-contained-inverse.css b/gtk/theme/HighContrast/gtk-contained-inverse.css
index 8597b203b8..9d821bb91f 100644
--- a/gtk/theme/HighContrast/gtk-contained-inverse.css
+++ b/gtk/theme/HighContrast/gtk-contained-inverse.css
@@ -2002,9 +2002,9 @@ scrollbar {
   scrollbar.vertical button.up {
     -gtk-icon-source: -gtk-icontheme("pan-up-symbolic"); }
   scrollbar.horizontal button.down {
-    -gtk-icon-source: -gtk-icontheme("pan-right-symbolic"); }
+    -gtk-icon-source: -gtk-icontheme("pan-end-symbolic"); }
   scrollbar.horizontal button.up {
-    -gtk-icon-source: -gtk-icontheme("pan-left-symbolic"); }
+    -gtk-icon-source: -gtk-icontheme("pan-start-symbolic"); }
 
 treeview ~ scrollbar.vertical {
   border-top: 1px solid gray;
diff --git a/gtk/theme/HighContrast/gtk-contained.css b/gtk/theme/HighContrast/gtk-contained.css
index 1c3b03f17d..6e416d8739 100644
--- a/gtk/theme/HighContrast/gtk-contained.css
+++ b/gtk/theme/HighContrast/gtk-contained.css
@@ -2006,9 +2006,9 @@ scrollbar {
   scrollbar.vertical button.up {
     -gtk-icon-source: -gtk-icontheme("pan-up-symbolic"); }
   scrollbar.horizontal button.down {
-    -gtk-icon-source: -gtk-icontheme("pan-right-symbolic"); }
+    -gtk-icon-source: -gtk-icontheme("pan-end-symbolic"); }
   scrollbar.horizontal button.up {
-    -gtk-icon-source: -gtk-icontheme("pan-left-symbolic"); }
+    -gtk-icon-source: -gtk-icontheme("pan-start-symbolic"); }
 
 treeview ~ scrollbar.vertical {
   border-top: 1px solid gray;