diff --git a/moonlight-common-c/moonlight-common-c.pro b/moonlight-common-c/moonlight-common-c.pro
index 7f73d074..f62b30bc 100644
--- a/moonlight-common-c/moonlight-common-c.pro
+++ b/moonlight-common-c/moonlight-common-c.pro
@@ -67,7 +67,7 @@ INCLUDEPATH += \
 CONFIG += warn_off staticlib
 DEFINES += HAS_SOCKLEN_T
 
-debug {
+CONFIG(debug, debug|release) {
     # Enable asserts on debug builds
     DEFINES += LC_DEBUG
 }
diff --git a/soundio/soundio.pro b/soundio/soundio.pro
index 9c5c0d47..b6c87f17 100644
--- a/soundio/soundio.pro
+++ b/soundio/soundio.pro
@@ -44,6 +44,11 @@ unix:!macx {
     }
 }
 
+CONFIG(release, debug|release) {
+    # Disable asserts on release builds
+    DEFINES += NDEBUG
+}
+
 DEFINES += \
     SOUNDIO_STATIC_LIBRARY               \
     SOUNDIO_VERSION_MAJOR=1              \