diff --git a/media/mtransport/test/moz.build b/media/mtransport/test/moz.build
index 0cebf9a0daf..c7e231551f2 100644
--- a/media/mtransport/test/moz.build
+++ b/media/mtransport/test/moz.build
@@ -41,7 +41,7 @@ if CONFIG['OS_TARGET'] == 'Linux':
         '/media/mtransport/third_party/nrappkit/src/port/linux/include',
     ]
     USE_LIBS += [
-        'static:/nsprpub/lib/libc/src/plc4',
+        'nspr',
     ]
     OS_LIBS += [
         '-lrt',
diff --git a/media/webrtc/signaling/test/standalone/moz.build b/media/webrtc/signaling/test/standalone/moz.build
index 164467d622c..0c1e3bd59a0 100644
--- a/media/webrtc/signaling/test/standalone/moz.build
+++ b/media/webrtc/signaling/test/standalone/moz.build
@@ -25,7 +25,7 @@ for var in ('MOZILLA_INTERNAL_API', 'MOZILLA_XPCOMRT_API'):
 
 if CONFIG['OS_TARGET'] == 'Linux':
     USE_LIBS += [
-        'static:/nsprpub/lib/libc/src/plc4',
+        'nspr',
     ]
     OS_LIBS += [
         '-lrt',