diff --git a/cabal-install/src/Distribution/Client/ProjectBuilding.hs b/cabal-install/src/Distribution/Client/ProjectBuilding.hs
index fa917b9f1bf..e0c97aca924 100644
--- a/cabal-install/src/Distribution/Client/ProjectBuilding.hs
+++ b/cabal-install/src/Distribution/Client/ProjectBuilding.hs
@@ -672,9 +672,9 @@ rebuildTargets
         info verbosity $
           "Executing install plan "
             ++ case buildSettingNumJobs of
-              NumJobs n -> " in parallel using " ++ show n ++ " threads."
-              UseSem n -> " in parallel using a semaphore with " ++ show n ++ " slots."
-              Serial -> " serially."
+              NumJobs n -> "in parallel using " ++ show n ++ " threads."
+              UseSem n -> "in parallel using a semaphore with " ++ show n ++ " slots."
+              Serial -> "serially."
 
         createDirectoryIfMissingVerbose verbosity True distBuildRootDirectory
         createDirectoryIfMissingVerbose verbosity True distTempDirectory
diff --git a/changelog.d/pr-9376 b/changelog.d/pr-9376
new file mode 100644
index 00000000000..d85dc9bf49a
--- /dev/null
+++ b/changelog.d/pr-9376
@@ -0,0 +1,6 @@
+synopsis: Avoid a double space in "Executing install plan ..."
+description:
+  The "Executing·install·plan··serially" and other similar "Executing install
+  plan··..." outputs no longer contain double spaces.
+packages: cabal-install
+prs: #9376
\ No newline at end of file