X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Finsets%2Finsetexternal.C;h=735480991cc9c7671cbe9a4382ff3aa2172c4ed5;hb=b922cdd796f9e4b9a46a79808cdee596e04903eb;hp=1b44579265aa4f760311c489f7747b1515876919;hpb=743bb400616283262119244449746baea98adc1b;p=lyx.git

diff --git a/src/insets/insetexternal.C b/src/insets/insetexternal.C
index 1b44579265..735480991c 100644
--- a/src/insets/insetexternal.C
+++ b/src/insets/insetexternal.C
@@ -185,7 +185,7 @@ void InsetExternal::validate(LaTeXFeatures & features) const
 		features.require(cit->second.requirement);
 	}
 	if (!cit->second.preamble.empty()) {
-		features.externalPreambles += cit->second.preamble + "\n";
+		features.addExternalPreamble(cit->second.preamble + "\n");
 	}
 }