diff --git a/src/Audio/Source.h b/src/Audio/Source.h
index f96de05c1..a74536e36 100644
--- a/src/Audio/Source.h
+++ b/src/Audio/Source.h
@@ -275,7 +275,7 @@ class MAGNUM_AUDIO_EXPORT Source {
          *      with @def_al{CONE_INNER_ANGLE}
          */
         Source& setInnerConeAngle(Deg angle) {
-            alSourcef(_id, AL_CONE_INNER_ANGLE, Float(angle));
+            alSourcef(_id, AL_CONE_INNER_ANGLE, angle.toUnderlyingType());
             return *this;
         }
 
@@ -290,7 +290,7 @@ class MAGNUM_AUDIO_EXPORT Source {
          *      @def_al{CONE_OUTER_ANGLE}
          */
         Source& setOuterConeAngle(Deg angle) {
-            alSourcef(_id, AL_CONE_OUTER_ANGLE, Float(angle));
+            alSourcef(_id, AL_CONE_OUTER_ANGLE, angle.toUnderlyingType());
             return *this;
         }