diff --git a/themes/Compact/Makefile.am b/themes/Compact/Makefile.am
index 815f6a50e3..8c70304dbf 100644
--- a/themes/Compact/Makefile.am
+++ b/themes/Compact/Makefile.am
@@ -2,6 +2,6 @@
 
 themedatadir = $(gimpdatadir)/themes/Compact
 
-themedata_DATA = gimp.css gimp-dark.css
+themedata_DATA = gimp.css gimp-dark.css compact.css
 
 EXTRA_DIST = $(themedata_DATA)
diff --git a/themes/Compact/compact.css b/themes/Compact/compact.css
new file mode 100644
index 0000000000..04fb68612c
--- /dev/null
+++ b/themes/Compact/compact.css
@@ -0,0 +1,17 @@
+/* Set of common styles for the Compact theme for GIMP 3.0 */
+
+* {
+  -GimpToolPalette-tool-icon-size: small-toolbar;
+}
+
+toolpalette button {
+  padding: 0px;
+}
+
+button, tab {
+  padding: 0px;
+}
+
+paned separator {
+  padding: 1px;
+}
diff --git a/themes/Compact/gimp-dark.css b/themes/Compact/gimp-dark.css
index ebf56ec09c..9e271dd887 100644
--- a/themes/Compact/gimp-dark.css
+++ b/themes/Compact/gimp-dark.css
@@ -1,16 +1,4 @@
 /* Dark variant for the Compact theme for GIMP 3.0 */
 
 @import url("../Default/gimp-dark.css");
-
-* {
-  -GimpToolPalette-tool-icon-size: small-toolbar;
-}
-
-toolpalette button {
-  padding: 0px;
-}
-
-button, tab {
-  padding: 0px;
-}
-
+@import url("compact.css");
diff --git a/themes/Compact/gimp.css b/themes/Compact/gimp.css
index 8e63af5dcb..502cfec9c2 100644
--- a/themes/Compact/gimp.css
+++ b/themes/Compact/gimp.css
@@ -1,15 +1,4 @@
 /* Light variant for the Compact theme for GIMP 3.0 */
 
 @import url("../Default/gimp.css");
-
-* {
-  -GimpToolPalette-tool-icon-size: small-toolbar;
-}
-
-toolpalette button {
-  padding: 0px;
-}
-
-button, tab {
-  padding: 0px;
-}
+@import url("compact.css");
diff --git a/themes/Compact/meson.build b/themes/Compact/meson.build
index 69ca467f5f..96cd3a40d0 100644
--- a/themes/Compact/meson.build
+++ b/themes/Compact/meson.build
@@ -1,3 +1,3 @@
-install_data([ 'gimp.css', 'gimp-dark.css' ],
+install_data([ 'gimp.css', 'gimp-dark.css', 'compact.css' ],
              install_dir: gimpdatadir / 'themes' / 'Compact')