diff --git a/dj_eq_1901.xml b/dj_eq_1901.xml
index 9459f49..3b16257 100644
--- a/dj_eq_1901.xml
+++ b/dj_eq_1901.xml
@@ -56,6 +56,10 @@ filters = calloc(BANDS, sizeof(biquad));
       *(plugin_data->latency) = 3; //XXX is this right?
     ]]></callback>
 
+    <callback event="cleanup"><![CDATA[
+       free(plugin_data->filters);
+    ]]></callback>
+
     <port label="lo" dir="input" type="control" hint="default_0">
       <name>Lo gain (dB)</name>
       <p>Controls the gain of the low (100Hz) peak/dip band</p>
@@ -140,6 +144,10 @@ filters = calloc(BANDS * 2, sizeof(biquad));
       *(plugin_data->latency) = 3; //XXX is this right?
     ]]></callback>
 
+    <callback event="cleanup"><![CDATA[
+       free(plugin_data->filters);
+    ]]></callback>
+
     <port label="lo" dir="input" type="control" hint="default_0">
       <name>Lo gain (dB)</name>
       <p>Controls the gain of the low (100Hz) peak/dip band</p>
diff --git a/fast_lookahead_limiter_1913.xml b/fast_lookahead_limiter_1913.xml
index 9347cc2..0c77d27 100644
--- a/fast_lookahead_limiter_1913.xml
+++ b/fast_lookahead_limiter_1913.xml
@@ -186,6 +186,7 @@ over the limit, and tries to get the minimum ammount of distortion.</p>
 
     <callback event="cleanup"><![CDATA[
        free(plugin_data->buffer);
+       free(plugin_data->chunks);
     ]]></callback>
 
     <port label="ingain" dir="input" type="control" hint="default_0">
diff --git a/imp_1199.xml b/imp_1199.xml
index c531cfb..22e7a1c 100644
--- a/imp_1199.xml
+++ b/imp_1199.xml
@@ -177,6 +177,11 @@
       local_free(plugin_data->op);
       local_free(plugin_data->overlap);
       local_free(plugin_data->opc);
+      unsigned int i;
+      for (i=0; i<IMPULSES; i++) {
+        local_free(plugin_data->impulse_freq[i]);
+      }
+      local_free(plugin_data->impulse_freq);
     ]]></callback>
 
     <callback event="run"><![CDATA[
diff --git a/vynil_1905.xml b/vynil_1905.xml
index 3e85915..18eafbe 100644
--- a/vynil_1905.xml
+++ b/vynil_1905.xml
@@ -179,6 +179,7 @@
       free(plugin_data->buffer_m);
       free(plugin_data->buffer_s);
       free(plugin_data->click_buffer);
+      free(plugin_data->highp);
       free(plugin_data->lowp_m);
       free(plugin_data->lowp_s);
       free(plugin_data->noise_filt);