diff --git a/lib/matplotlib/_mathtext_data.py b/lib/matplotlib/_mathtext_data.py
index cb87d445cd48..438686005f16 100644
--- a/lib/matplotlib/_mathtext_data.py
+++ b/lib/matplotlib/_mathtext_data.py
@@ -2496,7 +2496,7 @@
         (0x0049, 0x0049, 'it', 0x2110),  # I
         (0x004a, 0x004b, 'it', 0x1d4a5), # J-K
         (0x004c, 0x004c, 'it', 0x2112),  # L
-        (0x004d, 0x003d, 'it', 0x2133),  # M
+        (0x004d, 0x004d, 'it', 0x2133),  # M
         (0x004e, 0x0051, 'it', 0x1d4a9), # N-Q
         (0x0052, 0x0052, 'it', 0x211b),  # R
         (0x0053, 0x005a, 'it', 0x1d4ae), # S-Z
diff --git a/lib/matplotlib/tests/baseline_images/test_mathtext/mathfont_cm_49.png b/lib/matplotlib/tests/baseline_images/test_mathtext/mathfont_cm_49.png
index 0e4370e44715..88735677a00b 100644
Binary files a/lib/matplotlib/tests/baseline_images/test_mathtext/mathfont_cm_49.png and b/lib/matplotlib/tests/baseline_images/test_mathtext/mathfont_cm_49.png differ
diff --git a/lib/matplotlib/tests/baseline_images/test_mathtext/mathfont_stix_49.png b/lib/matplotlib/tests/baseline_images/test_mathtext/mathfont_stix_49.png
index 0e4370e44715..88735677a00b 100644
Binary files a/lib/matplotlib/tests/baseline_images/test_mathtext/mathfont_stix_49.png and b/lib/matplotlib/tests/baseline_images/test_mathtext/mathfont_stix_49.png differ
diff --git a/lib/matplotlib/tests/baseline_images/test_mathtext/mathfont_stixsans_49.png b/lib/matplotlib/tests/baseline_images/test_mathtext/mathfont_stixsans_49.png
index 0447a17dc31e..88735677a00b 100644
Binary files a/lib/matplotlib/tests/baseline_images/test_mathtext/mathfont_stixsans_49.png and b/lib/matplotlib/tests/baseline_images/test_mathtext/mathfont_stixsans_49.png differ