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-rw-r--r--src/svg/svg-length.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/svg/svg-length.h b/src/svg/svg-length.h
index bd3435ca6..4663aced4 100644
--- a/src/svg/svg-length.h
+++ b/src/svg/svg-length.h
@@ -12,6 +12,8 @@
#ifndef SEEN_SP_SVG_LENGTH_H
#define SEEN_SP_SVG_LENGTH_H
+#include <string>
+
/**
* SVG length type
*/