diff --git a/common/Makefile.am.inc b/common/Makefile.am.inc
index 42bdb25b..70fa6784 100644
--- a/common/Makefile.am.inc
+++ b/common/Makefile.am.inc
@@ -60,6 +60,8 @@ libflatpak_common_la_SOURCES = \
 	common/flatpak-table-printer.h \
 	common/flatpak-chain-input-stream.c \
 	common/flatpak-chain-input-stream.h \
+	common/flatpak-portal-error.c \
+	common/flatpak-portal-error.h \
 	common/flatpak-json.c \
 	common/flatpak-json.h \
 	common/flatpak-json-oci.c \
diff --git a/portal/flatpak-portal-error.c b/common/flatpak-portal-error.c
similarity index 100%
rename from portal/flatpak-portal-error.c
rename to common/flatpak-portal-error.c
diff --git a/portal/flatpak-portal-error.h b/common/flatpak-portal-error.h
similarity index 100%
rename from portal/flatpak-portal-error.h
rename to common/flatpak-portal-error.h
diff --git a/portal/Makefile.am.inc b/portal/Makefile.am.inc
index adea910f..38a56bb1 100644
--- a/portal/Makefile.am.inc
+++ b/portal/Makefile.am.inc
@@ -28,8 +28,8 @@ flatpak_portal_SOURCES = \
 	portal/flatpak-portal.h		\
 	portal/flatpak-portal-app-info.c		\
 	portal/flatpak-portal-app-info.h		\
-	portal/flatpak-portal-error.c	\
-	portal/flatpak-portal-error.h	\
+	common/flatpak-portal-error.c	\
+	common/flatpak-portal-error.h	\
 	$(NULL)
 
 BUILT_SOURCES += $(portal_built_sources)