diff --git a/sys-devel/llvm/llvm-4.0.0-r1.ebuild b/sys-devel/llvm/llvm-4.0.0-r1.ebuild
index 1384df1a11915..c9745dcdf6c79 100644
--- a/sys-devel/llvm/llvm-4.0.0-r1.ebuild
+++ b/sys-devel/llvm/llvm-4.0.0-r1.ebuild
@@ -262,4 +262,6 @@ multilib_src_install_all() {
 		LDPATH="$( IFS=:; echo "${LLVM_LDPATHS[*]}" )"
 _EOF_
 	doenvd "${T}/10llvm-${revord}"
+
+	docompress "/usr/lib/llvm/${SLOT}/share/man"
 }
diff --git a/sys-devel/llvm/llvm-9999.ebuild b/sys-devel/llvm/llvm-9999.ebuild
index 16413680bdfe3..44153d7806ec2 100644
--- a/sys-devel/llvm/llvm-9999.ebuild
+++ b/sys-devel/llvm/llvm-9999.ebuild
@@ -262,4 +262,6 @@ multilib_src_install_all() {
 		LDPATH="$( IFS=:; echo "${LLVM_LDPATHS[*]}" )"
 _EOF_
 	doenvd "${T}/10llvm-${revord}"
+
+	docompress "/usr/lib/llvm/${SLOT}/share/man"
 }