diff --git a/Help/release/dev/cmake-install-j-no-space.rst b/Help/release/dev/cmake-install-j-no-space.rst
new file mode 100644
index 0000000000..e3d34111f0
--- /dev/null
+++ b/Help/release/dev/cmake-install-j-no-space.rst
@@ -0,0 +1,5 @@
+cmake-install-j-no-space
+------------------------
+
+* :option:`cmake --install` now accepts ``-j<N>`` in addition to ``-j <N>``
+  for specifying the number of parallel jobs.
diff --git a/Source/cmakemain.cxx b/Source/cmakemain.cxx
index bb943f549d..680573b60b 100644
--- a/Source/cmakemain.cxx
+++ b/Source/cmakemain.cxx
@@ -840,7 +840,8 @@ int do_install(int ac, char const* const* av)
     CommandArgument{
       "--default-directory-permissions", CommandArgument::Values::One,
       CommandArgument::setToValue(defaultDirectoryPermissions) },
-    CommandArgument{ "-j", CommandArgument::Values::One, jLambda },
+    CommandArgument{ "-j", CommandArgument::Values::One,
+                     CommandArgument::RequiresSeparator::No, jLambda },
     CommandArgument{ "--parallel", CommandArgument::Values::One,
                      parallelLambda },
     CommandArgument{ "--prefix", CommandArgument::Values::One,
diff --git a/Tests/RunCMake/InstallParallel/RunCMakeTest.cmake b/Tests/RunCMake/InstallParallel/RunCMakeTest.cmake
index b7a059b5f2..d491b66546 100644
--- a/Tests/RunCMake/InstallParallel/RunCMakeTest.cmake
+++ b/Tests/RunCMake/InstallParallel/RunCMakeTest.cmake
@@ -48,6 +48,7 @@ function(install_test test)
 endfunction()
 
 install_test(parallel PARALLEL ARGS "-j 4")
+install_test(parallel-no-space PARALLEL ARGS "-j4")
 install_test(no-parallel ARGS "-j 4")
 install_test(out-of-date-json TOUCH_CACHE PARALLEL ARGS "-j 4")
 install_test(component PARALLEL ARGS "-j 4" COMPONENT "ALPHANUMERIC123")
diff --git a/Tests/RunCMake/InstallParallel/parallel-no-space-install-stdout.txt b/Tests/RunCMake/InstallParallel/parallel-no-space-install-stdout.txt
new file mode 100644
index 0000000000..9c059b0f20
--- /dev/null
+++ b/Tests/RunCMake/InstallParallel/parallel-no-space-install-stdout.txt
@@ -0,0 +1,15 @@
+\[1\/5\] .*
+\-\- Installing:[^
+]*
+\[2\/5\] .*
+\-\- Installing:[^
+]*
+\[3\/5\] .*
+\-\- Installing:[^
+]*
+\[4\/5\] .*
+\-\- Installing:[^
+]*
+\[5\/5\] .*
+\-\- Installing:[^
+]*