diff --git a/src/ccmain/Makefile.am b/src/ccmain/Makefile.am
index 7bcb175b..1a1794ba 100644
--- a/src/ccmain/Makefile.am
+++ b/src/ccmain/Makefile.am
@@ -25,6 +25,7 @@ endif
 
 pkginclude_HEADERS = \
     thresholder.h \
+    osdetect.h \
     ltrresultiterator.h \
     pageiterator.h \
     resultiterator.h
@@ -38,7 +39,6 @@ noinst_HEADERS = \
     output.h \
     paragraphs.h \
     paragraphs_internal.h \
-    osdetect.h \
     paramsd.h \
     pgedit.h \
     reject.h \