diff --git a/src/lib/notcurses.c b/src/lib/notcurses.c
index 4b1a0270e..29095e7b8 100644
--- a/src/lib/notcurses.c
+++ b/src/lib/notcurses.c
@@ -17,6 +17,7 @@
 #include <unistr.h>
 #include <locale.h>
 #include <uniwbrk.h>
+#include <inttypes.h>
 #include <notcurses/direct.h>
 #include "compat/compat.h"
 
@@ -1037,7 +1038,7 @@ notcurses* notcurses_core_init(const notcurses_options* opts, FILE* outfp){
     return NULL;
   }
   if(opts->flags >= (NCOPTION_NO_FONT_CHANGES << 1u)){
-    fprintf(stderr, "Warning: unknown Notcurses options %016jx\n", (uintmax_t)opts->flags);
+    fprintf(stderr, "Warning: unknown Notcurses options %016" PRIu64 "\n", opts->flags);
   }
   notcurses* ret = malloc(sizeof(*ret));
   if(ret == NULL){
diff --git a/src/lib/plot.c b/src/lib/plot.c
index edc6ccd5c..e0f00e259 100644
--- a/src/lib/plot.c
+++ b/src/lib/plot.c
@@ -2,6 +2,7 @@
 #include <float.h>
 #include <limits.h>
 #include <string.h>
+#include <inttypes.h>
 #include "internal.h"
 
 #define MAXWIDTH 2
@@ -205,7 +206,7 @@ int redraw_plot_##T(nc##X##plot* ncp){ \
     int lastslot = ncp->slotstart ? ncp->slotstart - 1 : ncp->slotcount - 1; \
     ncplane_set_styles(ncp->ncp, ncp->legendstyle); \
     ncplane_set_channels(ncp->ncp, ncp->maxchannels); \
-    ncplane_printf_aligned(ncp->ncp, 0, NCALIGN_RIGHT, "%ju", (uintmax_t)ncp->slots[lastslot]); \
+    ncplane_printf_aligned(ncp->ncp, 0, NCALIGN_RIGHT, "%" PRIu64 "u", (uint64_t)ncp->slots[lastslot]); \
   } \
   ncplane_home(ncp->ncp); \
   return 0; \
diff --git a/src/lib/png.c b/src/lib/png.c
index 9dbb4aaf7..9cd5c2920 100644
--- a/src/lib/png.c
+++ b/src/lib/png.c
@@ -1,7 +1,6 @@
 #include <zlib.h>
 #include <inttypes.h>
 #include <stdatomic.h>
-#include <arpa/inet.h>
 #include "visual-details.h"
 #include "internal.h"
 #include "base64.h"