diff --git a/include/jemalloc/internal/bit_util.h b/include/jemalloc/internal/bit_util.h
index 88c7942e..cfd95c4e 100644
--- a/include/jemalloc/internal/bit_util.h
+++ b/include/jemalloc/internal/bit_util.h
@@ -195,7 +195,7 @@ fls_u(unsigned x) {
 	/*								\
 	 * Algorithm from an old AMD optimization reference manual.	\
 	 * We're putting a little bit more work than you might expect	\
-	 * into the no-instrinsic case, since we only support the	\
+	 * into the no-intrinsic case, since we only support the	\
 	 * GCC intrinsics spelling of popcount (for now).  Detecting	\
 	 * whether or not the popcount builtin is actually useable in	\
 	 * MSVC is nontrivial.						\
@@ -212,7 +212,7 @@ fls_u(unsigned x) {
 	 * That costs an extra mask relative to this, though.		\
 	 */								\
 	x = x - ((x >> 1) & (0x55U * bmul));				\
-	/* Replace each 4 bits with their sideays sum.  0x3 = 0b0011. */\
+	/* Replace each 4 bits with their sideways sum.  0x3 = 0b0011. */\
 	x = (x & (bmul * 0x33U)) + ((x >> 2) & (bmul * 0x33U));		\
 	/*								\
 	 * Replace each 8 bits with their sideways sum.  Note that we	\
diff --git a/include/jemalloc/internal/hpa.h b/include/jemalloc/internal/hpa.h
index dc7725b7..6783eb7f 100644
--- a/include/jemalloc/internal/hpa.h
+++ b/include/jemalloc/internal/hpa.h
@@ -145,7 +145,7 @@ struct hpa_shard_s {
 
 bool hpa_hugepage_size_exceeds_limit(void);
 /*
- * Whether or not the HPA can be used given the current configuration.  This is
+ * Whether or not the HPA can be used given the current configuration.  This
  * is not necessarily a guarantee that it backs its allocations by hugepages,
  * just that it can function properly given the system it's running on.
  */
diff --git a/src/arena.c b/src/arena.c
index d7c8cd1f..e43aabe4 100644
--- a/src/arena.c
+++ b/src/arena.c
@@ -18,7 +18,7 @@ JEMALLOC_DIAGNOSTIC_DISABLE_SPURIOUS
 /* Data. */
 
 /*
- * Define names for both unininitialized and initialized phases, so that
+ * Define names for both uninitialized and initialized phases, so that
  * options and mallctl processing are straightforward.
  */
 const char *const percpu_arena_mode_names[] = {
@@ -44,7 +44,7 @@ static unsigned nbins_total;
 
 /*
  * a0 is used to handle huge requests before malloc init completes. After
- * that,the huge_arena_ind is updated to point to the actual huge arena,
+ * that, the huge_arena_ind is updated to point to the actual huge arena,
  * which is the last one of the auto arenas.
  */
 unsigned  huge_arena_ind = 0;
diff --git a/src/hpa.c b/src/hpa.c
index 7e5b5f72..ce6ece2b 100644
--- a/src/hpa.c
+++ b/src/hpa.c
@@ -46,7 +46,7 @@ hpa_supported(void) {
 		return false;
 	}
 	/*
-	 * We fundamentally rely on a address-space-hungry growth strategy for
+	 * We fundamentally rely on an address-space-hungry growth strategy for
 	 * hugepages.
 	 */
 	if (LG_SIZEOF_PTR != 3) {
diff --git a/src/jemalloc.c b/src/jemalloc.c
index 8d341ba3..1ca39726 100644
--- a/src/jemalloc.c
+++ b/src/jemalloc.c
@@ -43,7 +43,7 @@ const char *je_malloc_conf
  * setting, which gets lower priority than the environment settings).
  *
  * But it's a fairly common use case in some testing environments for a user to
- * be able to control the binary, but nothing else (e.g. a performancy canary
+ * be able to control the binary, but nothing else (e.g. a performance canary
  * uses the production OS and environment variables, but can run any binary in
  * those circumstances).  For these use cases, it's handy to have an in-binary
  * mechanism for overriding environment variable settings, with the idea that if