diff --git a/Makefile b/Makefile
index de82dad..797c663 100755
--- a/Makefile
+++ b/Makefile
@@ -65,11 +65,16 @@ LAYNII2		= 	LN2_LAYERS \
 				LN2_UVD_FILTER \
 				LN2_HEXBIN \
 				LN2_NEIGHBORS \
-				LN2_GRAMAG \
 				LN2_RIM_POLISH \
 				LN2_RIM_BORDERIZE \
+				
+DERIVATIVES	=	LN2_GRADIENTS \
+				LN2_GRAMAG \
+				LN2_PHASE_GRADIENTS \
+				LN2_PHASE_LAPLACIAN \
+				LN2_PHASE_JOLT \
 
-LAYNII 	= $(LAYNII2) $(HIGH_PRIORITY) $(LOW_PRIORITY)
+LAYNII 	= $(LAYNII2) $(HIGH_PRIORITY) $(LOW_PRIORITY) $(DERIVATIVES)
 
 # =============================================================================
 all : $(LAYNII)
@@ -237,26 +242,12 @@ LN2_RIM_POLISH:
 LN2_RIM_BORDERIZE:
 	$(CC) $(CFLAGS) -o LN2_RIM_BORDERIZE src/LN2_RIM_BORDERIZE.cpp $(LIBRARIES) $(LFLAGS)
 
-# =============================================================================
-# Work in progress programs
-LN2_GRAMAG:
-	$(CC) $(CFLAGS) -o LN2_GRAMAG src/LN2_GRAMAG.cpp $(LIBRARIES) $(LFLAGS)
-
-LN2_UVD_LSTSQR:
-	$(CC) $(CFLAGS) -o LN2_UVD_LSTSQR src/LN2_UVD_LSTSQR.cpp $(LIBRARIES) $(LFLAGS)
-
-LN2_PEAK_DETECT:
-	$(CC) $(CFLAGS) -o LN2_PEAK_DETECT src/LN2_PEAK_DETECT.cpp $(LIBRARIES) $(LFLAGS)
-
-LN2_NEIGHBORS:
-	$(CC) $(CFLAGS) -o LN2_NEIGHBORS src/LN2_NEIGHBORS.cpp $(LIBRARIES) $(LFLAGS)
-
-LN2_WINDOWED_COUNTER_2D:
-	$(CC) $(CFLAGS) -o LN2_WINDOWED_COUNTER_2D src/LN2_WINDOWED_COUNTER_2D.cpp $(LIBRARIES) $(LFLAGS)
-
 LN2_GRADIENTS:
 	$(CC) $(CFLAGS) -o LN2_GRADIENTS src/LN2_GRADIENTS.cpp $(LIBRARIES) $(LFLAGS)
 
+LN2_GRAMAG:
+	$(CC) $(CFLAGS) -o LN2_GRAMAG src/LN2_GRAMAG.cpp $(LIBRARIES) $(LFLAGS)
+
 LN2_LAPLACIAN:
 	$(CC) $(CFLAGS) -o LN2_LAPLACIAN src/LN2_LAPLACIAN.cpp $(LIBRARIES) $(LFLAGS)
 
@@ -269,6 +260,20 @@ LN2_PHASE_LAPLACIAN:
 LN2_PHASE_JOLT:
 	$(CC) $(CFLAGS) -o LN2_PHASE_JOLT src/LN2_PHASE_JOLT.cpp $(LIBRARIES) $(LFLAGS)
 
+# =============================================================================
+# Work in progress programs
+LN2_UVD_LSTSQR:
+	$(CC) $(CFLAGS) -o LN2_UVD_LSTSQR src/LN2_UVD_LSTSQR.cpp $(LIBRARIES) $(LFLAGS)
+
+LN2_PEAK_DETECT:
+	$(CC) $(CFLAGS) -o LN2_PEAK_DETECT src/LN2_PEAK_DETECT.cpp $(LIBRARIES) $(LFLAGS)
+
+LN2_NEIGHBORS:
+	$(CC) $(CFLAGS) -o LN2_NEIGHBORS src/LN2_NEIGHBORS.cpp $(LIBRARIES) $(LFLAGS)
+
+LN2_WINDOWED_COUNTER_2D:
+	$(CC) $(CFLAGS) -o LN2_WINDOWED_COUNTER_2D src/LN2_WINDOWED_COUNTER_2D.cpp $(LIBRARIES) $(LFLAGS)
+
 LN2_SKELETONIZE:
 	$(CC) $(CFLAGS) -o LN2_SKELETONIZE src/LN2_SKELETONIZE.cpp $(LIBRARIES) $(LFLAGS)