diff --git a/src/arch/Makefile.am b/src/arch/Makefile.am
index b066d5b728..602e4b6514 100644
--- a/src/arch/Makefile.am
+++ b/src/arch/Makefile.am
@@ -8,10 +8,10 @@ AM_CXXFLAGS += -fvisibility=hidden -fvisibility-inlines-hidden
 AM_CPPFLAGS += -DTESS_EXPORTS
 endif
 
-pkginclude_HEADERS = intsimdmatrix.h
+pkginclude_HEADERS =
 
 noinst_HEADERS = dotproductavx.h dotproductsse.h
-noinst_HEADERS += intsimdmatrixavx2.h intsimdmatrixsse.h
+noinst_HEADERS += intsimdmatrix.h intsimdmatrixavx2.h intsimdmatrixsse.h
 noinst_HEADERS += simddetect.h
 
 noinst_LTLIBRARIES = libtesseract_avx.la libtesseract_avx2.la libtesseract_sse.la