diff --git a/doc/libinput.doxygen.in b/doc/libinput.doxygen.in
index f78bfdf1..5366501b 100644
--- a/doc/libinput.doxygen.in
+++ b/doc/libinput.doxygen.in
@@ -7,6 +7,7 @@ OPTIMIZE_OUTPUT_FOR_C  = YES
 EXTRACT_ALL            = YES
 EXTRACT_STATIC         = YES
 MAX_INITIALIZER_LINES  = 0
+WARNINGS               = YES
 QUIET                  = YES
 INPUT                  = "@builddir@"
 FILTER_PATTERNS        = *.h *.dox