diff --git a/truffle/mx.truffle/suite.py b/truffle/mx.truffle/suite.py
index c115349221f9..d17ad38c07d4 100644
--- a/truffle/mx.truffle/suite.py
+++ b/truffle/mx.truffle/suite.py
@@ -962,19 +962,19 @@
         },
         "linux" : {
           "<others>" : {
-            "cflags" : ["-g", "-Wall", "-Werror", "-D_GNU_SOURCE"],
+            "cflags" : ["-g", "-Wall", "-Werror", "-D_GNU_SOURCE", "-fvisibility=hidden"],
             "ldlibs" : ["-ldl"],
           },
         },
         "linux-musl" : {
           "<others>" : {
-            "cflags" : ["-g", "-Wall", "-Werror"],
+            "cflags" : ["-g", "-Wall", "-Werror", "-fvisibility=hidden"],
             "ldlibs" : ["-ldl"],
           },
         },
         "<others>" : {
           "<others>" : {
-            "cflags" : ["-g", "-Wall", "-Werror"],
+            "cflags" : ["-g", "-Wall", "-Werror", "-fvisibility=hidden"],
             "ldlibs" : ["-ldl"],
           },
         },