diff --git a/c/gcwrapper.c b/c/gcwrapper.c
index 8d7070d4b2..ef3740e175 100644
--- a/c/gcwrapper.c
+++ b/c/gcwrapper.c
@@ -130,7 +130,7 @@ void S_gc_init() {
     S_G.countof_size[countof_guardian] = 0;
   for (i = 0; i < countof_types; i += 1) {
     if (Svector_ref(S_G.countof_names, i) == FIX(0)) {
-      fprintf(stderr, "unitialized countof_name at index %d\n", i);
+      fprintf(stderr, "uninitialized countof_name at index %d\n", i);
       S_abnormal_exit();
     }
   }
diff --git a/c/scheme.c b/c/scheme.c
index fa7bf66edf..7f559cdf46 100644
--- a/c/scheme.c
+++ b/c/scheme.c
@@ -620,7 +620,7 @@ static IBOOL find_boot(name, ext, errorp) const char *name, *ext; IBOOL errorp;
                   Sschemeheapdirs, Sdefaultheapdirs);
           S_abnormal_exit();
         } else {
-          if (verbose) fprintf(stderr, "no compatable %s%s found\n", name, ext);
+          if (verbose) fprintf(stderr, "no compatible %s%s found\n", name, ext);
           return 0;
         }
       }
diff --git a/scheme.1.in b/scheme.1.in
index a2ecd22778..9bcfc14c55 100644
--- a/scheme.1.in
+++ b/scheme.1.in
@@ -605,7 +605,7 @@ At optimize-levels 0, 1, and 2, code generated by the compiler is
 At optimize-level 3, code generated by the compiler is \fIunsafe\fP,
 i.e., may omit these checks.
 Unsafe code is usually faster, but optimize-level 3 should be used only
-for well-tested code since the absense of type and bounds checks may
+for well-tested code since the absence of type and bounds checks may
 result in invalid memory references, corruption of the Scheme heap (which
 may cause seemingly unrelated problems later), system crashes, or other
 undesirable behaviors.