diff --git a/source/blender/blenkernel/intern/unit.c b/source/blender/blenkernel/intern/unit.c
index 4d287429558..249a35a0af8 100644
--- a/source/blender/blenkernel/intern/unit.c
+++ b/source/blender/blenkernel/intern/unit.c
@@ -815,6 +815,12 @@ static char *find_next_op(const char *str, char *remaining_str, int len_max)
 
       /* Make sure we don't look backwards before the start of the string. */
       if (remaining_str != str && i != 0) {
+        /* Check for velocity or acceleration (e.g. '/' in 'ft/s' is not an op). */
+        if ((remaining_str[i] == '/') && ELEM(remaining_str[i - 1], 't', 'T', 'm', 'M') &&
+            ELEM(remaining_str[i + 1], 's', 'S')) {
+          continue;
+        }
+
         /* Check for scientific notation. */
         if (ELEM(remaining_str[i - 1], 'e', 'E')) {
           scientific_notation = true;