diff --git a/.github/workflows/report-size-deltas.yml b/.github/workflows/report-size-deltas.yml
index 652be5d..39e2a0a 100644
--- a/.github/workflows/report-size-deltas.yml
+++ b/.github/workflows/report-size-deltas.yml
@@ -20,5 +20,5 @@ jobs:
       - name: Comment size deltas reports to PRs
         uses: arduino/report-size-deltas@v1
         with:
-          # The name of the workflow artifact created by the sketch compilation workflow
-          sketches-reports-source: sketches-reports
+          # Regex matching the names of the workflow artifacts created by the "Compile Examples" workflow
+          sketches-reports-source: ^sketches-report-.+
diff --git a/README.adoc b/README.adoc
index a77a80e..eeee79b 100644
--- a/README.adoc
+++ b/README.adoc
@@ -28,3 +28,10 @@ Lesser General Public License for more details.
 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+== How-to generate bitmaps from the fonts ==
+[source,bash]
+----
+cd extra
+./generate_font.py 5x7.bdf Font_5x7.c Font_5x7
+----
diff --git a/extras/generate_font.py b/extras/generate_font.py
index de786e5..016f634 100755
--- a/extras/generate_font.py
+++ b/extras/generate_font.py
@@ -60,22 +60,27 @@
 
 out = open(output, "w")
 
-print >> out, "#include \"Font.h\""
-print >> out
-print >> out, "const struct Font %s = {" % ( name )
-print >> out, "  %d," % ( fontWidth )
-print >> out, "  %d," % ( fontHeight )
-print >> out, "  (const uint8_t*[]){"
+out.write("#include \"Font.h\"\n")
+out.write("\n")
+out.write("const struct Font %s = {" % ( name ))
+out.write("\n")
+out.write("  %d," % ( fontWidth ))
+out.write("\n")
+out.write("  %d," % ( fontHeight ))
+out.write("\n")
+out.write("  (const uint8_t*[]){\n")
 for c in range (0, 255):
 	if None == fontCharacters[c]:
-		print >> out, "    NULL,"
+		out.write("    NULL,\n")
 	else:
-		print >> out, "    // %s" % (fontCharacterNames[c])
-		print >> out, "    (const uint8_t[]){"
+		out.write("    // %s" % (fontCharacterNames[c]))
+		out.write("\n")
+		out.write("    (const uint8_t[]){\n")
 		for i in range(0, fontHeight):
-			print >> out, "      0b%s," % ('{0:08b}'.format(fontCharacters[c][i]))
-		print >> out, "    },"
-print >> out, "  }"
-print >> out, "};"
+			out.write("      0b%s," % ('{0:08b}'.format(fontCharacters[c][i])))
+			out.write("\n")
+		out.write("    },\n")
+out.write("  }\n")
+out.write("};\n")
 
 out.close()
diff --git a/library.properties b/library.properties
index b896c9a..3ee6369 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=ArduinoGraphics
-version=1.1.1
+version=1.1.2
 author=Arduino
 maintainer=Arduino <info@arduino.cc>
 sentence=Core graphics library for Arduino.
diff --git a/src/ArduinoGraphics.cpp b/src/ArduinoGraphics.cpp
index 3590eec..b47c2b5 100644
--- a/src/ArduinoGraphics.cpp
+++ b/src/ArduinoGraphics.cpp
@@ -238,7 +238,7 @@ void ArduinoGraphics::text(const char* str, int x, int y)
   }
 
   while (*str) {
-    int c = *str++;
+    uint8_t const c = (uint8_t)*str++;
 
     if (c == '\n') {
       y += _font->height;