1 files changed, 1 insertions, 0 deletions

diff --git a/build.xml b/build.xml
index 3a45ca93e..c7ce9514c 100755
--- a/build.xml
+++ b/build.xml
@@ -340,6 +340,7 @@
         </excludeinc>
         <flags>
             -Wall -Wformat -Werror=format-security -W -Wpointer-arith -Wcast-align -Wsign-compare -Woverloaded-virtual -Wswitch
+            -Werror=return-type
             -O2
             -mms-bitfields
             -fopenmp