diff --git a/toolkit/components/telemetry/Telemetry.cpp b/toolkit/components/telemetry/Telemetry.cpp
index bf0ffcd838f..4ea3425668e 100644
--- a/toolkit/components/telemetry/Telemetry.cpp
+++ b/toolkit/components/telemetry/Telemetry.cpp
@@ -2245,8 +2245,19 @@ GetStackAndModules(const std::vector<uintptr_t>& aPCs)
 #ifdef MOZ_ENABLE_PROFILER_SPS
   for (unsigned i = 0, n = rawModules.GetSize(); i != n; ++i) {
     const SharedLibrary &info = rawModules.GetEntry(i);
+    const std::string &name = info.GetName();
+    std::string basename = name;
+#ifdef XP_MACOSX
+    // FIXME: We want to use just the basename as the libname, but the
+    // current profiler addon needs the full path name, so we compute the
+    // basename in here.
+    size_t pos = name.rfind('/');
+    if (pos != std::string::npos) {
+      basename = name.substr(pos + 1);
+    }
+#endif
     ProcessedStack::Module module = {
-      info.GetName(),
+      basename,
       info.GetBreakpadId()
     };
     Ret.AddModule(module);