diff --git a/build_json.py b/build_json.py
index f53a355..b1785c1 100755
--- a/build_json.py
+++ b/build_json.py
@@ -9,33 +9,36 @@ def main():
 
     conn = sqlite3.connect(database)
     data = []
+    pkgs = dict()
     with conn:
         cursor = conn.execute("SELECT FULLPKGNAME, COMMENT, DESCR_CONTENTS, WANTLIB, RUN_DEPENDS FROM PortsQ")
         for row in cursor:
-            gui = False
-            tui = False
-            if row[3]:
-                m = re.search("(GL|SDL|gtk-3|X11|Qt5Gui)", row[3])
-                if m:
-                    gui = True
-                m = re.search("(curses)", row[3])
-                if m:
-                    tui = True
-            if row[4]:
-                m = re.search("x11/gtk\+3,-guic", row[4])
-                if m:
-                    gui = True
-            if not gui and row[2] and row[3] and row[1] and not tui:
-                m = re.search("(client)", row[3]+row[1]+row[2])
-                if m:
-                    tui = True
-            data.append({
-              "pkgname": row[0], #"-".join(row[0].split("-")[:-1]),
-              "comment": row[1],
-              "descr": row[2],
-              "gui": gui,
-              "tui": tui
-              })
+            if not pkgs.get(row[0]):
+                pkgs[row[0]] = True
+                gui = False
+                tui = False
+                if row[3]:
+                    m = re.search("(GL|SDL|gtk-3|X11|Qt5Gui)", row[3])
+                    if m:
+                        gui = True
+                    m = re.search("(curses)", row[3])
+                    if m:
+                        tui = True
+                if row[4]:
+                    m = re.search("x11/gtk\+3,-guic", row[4])
+                    if m:
+                        gui = True
+                if not gui and row[2] and row[3] and row[1] and not tui:
+                    m = re.search("(client)", row[3]+row[1]+row[2])
+                    if m:
+                        tui = True
+                data.append({
+                  "pkgname": row[0], #"-".join(row[0].split("-")[:-1]),
+                  "comment": row[1],
+                  "descr": row[2],
+                  "gui": gui,
+                  "tui": tui
+                  })
     print(json.dumps(data))
 
 main()