diff --git a/apps/plugins/midi/midiplay.c b/apps/plugins/midi/midiplay.c
index 7a1176b1c9..0f79301338 100644
--- a/apps/plugins/midi/midiplay.c
+++ b/apps/plugins/midi/midiplay.c
@@ -92,7 +92,7 @@ struct MIDIfile * mf IBSS_ATTR;
 int numberOfSamples IBSS_ATTR;
 long bpm IBSS_ATTR;
 
-long gmbuf[BUF_SIZE*NBUF];
+int32_t gmbuf[BUF_SIZE*NBUF];
 
 int quit=0;
 struct plugin_api * rb;
@@ -147,7 +147,7 @@ bool lastswap=1;
 
 inline void synthbuf(void)
 {
-   long *outptr;
+   int32_t *outptr;
    register int i;
    static int currentSample=0;
    int synthtemp[2];
diff --git a/apps/plugins/midi/sequencer.c b/apps/plugins/midi/sequencer.c
index 473b7e4e2c..dbf238bfdd 100644
--- a/apps/plugins/midi/sequencer.c
+++ b/apps/plugins/midi/sequencer.c
@@ -76,7 +76,7 @@ long pitchTbl[]=
 };
 */
 
-long pitchTbl[] ICONST_ATTR={
+const long pitchTbl[] ICONST_ATTR={
    58386,58412,58439,58465,58491,58518,58544,58571,58597,58624,58650,58676,
    58703,58729,58756,58782,58809,58836,58862,58889,58915,58942,58968,58995,
    59022,59048,59075,59102,59128,59155,59182,59208,59235,59262,59289,59315,