diff --git a/lib/libx52/Makefile.am b/lib/libx52/Makefile.am
index ce64da4..01230d7 100644
--- a/lib/libx52/Makefile.am
+++ b/lib/libx52/Makefile.am
@@ -25,7 +25,7 @@ libx52_la_LDFLAGS = \
 libx52_la_LIBADD = @LTLIBINTL@
 
 # Header files that need to be copied
-x52includedir = $(includedir)/x52pro
+x52includedir = $(includedir)/libx52
 x52include_HEADERS = libx52.h
 
 # pkg-config files
diff --git a/lib/libx52io/Makefile.am b/lib/libx52io/Makefile.am
index 2e72833..9fb534e 100644
--- a/lib/libx52io/Makefile.am
+++ b/lib/libx52io/Makefile.am
@@ -22,7 +22,7 @@ libx52io_la_LDFLAGS = \
 libx52io_la_LIBADD = @LTLIBINTL@
 
 # Header files that need to be copied
-x52includedir = $(includedir)/x52pro
+x52includedir = $(includedir)/libx52
 x52include_HEADERS = libx52io.h
 
 # pkg-config files
diff --git a/lib/libx52util/Makefile.am b/lib/libx52util/Makefile.am
index 0dc3282..739eca2 100644
--- a/lib/libx52util/Makefile.am
+++ b/lib/libx52util/Makefile.am
@@ -17,7 +17,7 @@ libx52util_la_LDFLAGS = -version-info 1:0:0 $(WARN_LDFLAGS)
 libx52util_la_LIBADD = ../libx52/libx52.la
 
 # Header files that need to be copied
-x52includedir = $(includedir)/x52pro
+x52includedir = $(includedir)/libx52
 x52include_HEADERS = libx52util.h
 
 # Extra files that need to be in the distribution