diff --git a/man/ebuild.5 b/man/ebuild.5
index 3c2200c..2652f89 100644
@@ -344,6 +344,8 @@ For EAPIs that support fBHDEPENDfR (experimental fBEAPI 5-hdependfR),
list the fItargetfR dependencies, i.e. those to be installed into fBROOTfR.
For EAPIs that do not support fBHDEPENDfR, the fBemergefR(1) flag
fI--root-depsfR controls what the package manager installs there.
+Without it, fBemergefR defaults to install only runtime dependencies (i.e.
+fBRDEPENDfR and fBPDEPENDfR) into fBROOTfR.
See section fBVARIABLESfR for more information about the fBDEPENDfR,
fBRDEPENDfR and fBHDEPENDfR variables.