Index: trunk/psLib/src/fft/psFFT.c
===================================================================
--- trunk/psLib/src/fft/psFFT.c	(revision 18990)
+++ trunk/psLib/src/fft/psFFT.c	(revision 19004)
@@ -25,6 +25,9 @@
     return true;
 #else
-    psWarning("No thread support for FFTW.");
-    return false;
+    if (threads > 0) {
+        psWarning("No thread support for FFTW.");
+        return false;
+    }
+    return true;
 #endif
 }