diff --git a/ChangeLog b/ChangeLog
index f3a5714..f4b63c9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -24,6 +24,8 @@ now correctly backtracked, so this unnecessary restriction has been removed.
 
 5. Added PCRE2_SUBSTITUTE_LITERAL.
 
+6. Avoid some VS compiler warnings.
+
 
 Version 10.34 21-November-2019
 ------------------------------
diff --git a/src/pcre2_jit_compile.c b/src/pcre2_jit_compile.c
index 303c68f..78b94c1 100644
--- a/src/pcre2_jit_compile.c
+++ b/src/pcre2_jit_compile.c
@@ -12872,7 +12872,7 @@ jump_list *match = NULL;
 struct sljit_jump *next_alt = NULL;
 struct sljit_jump *accept_exit = NULL;
 struct sljit_label *quit;
-struct sljit_put_label *put_label;
+struct sljit_put_label *put_label = NULL;
 
 /* Recurse captures then. */
 common->then_trap = NULL;
diff --git a/src/pcre2_match.c b/src/pcre2_match.c
index 48e7b9d..a3fccc1 100644
--- a/src/pcre2_match.c
+++ b/src/pcre2_match.c
@@ -574,8 +574,8 @@ match(PCRE2_SPTR start_eptr, PCRE2_SPTR start_ecode, PCRE2_SIZE *ovector,
 heapframe *F;           /* Current frame pointer */
 heapframe *N = NULL;    /* Temporary frame pointers */
 heapframe *P = NULL;
-heapframe *assert_accept_frame;  /* For passing back the frame with captures */
-PCRE2_SIZE frame_copy_size;      /* Amount to copy when creating a new frame */
+heapframe *assert_accept_frame = NULL;  /* For passing back a frame with captures */
+PCRE2_SIZE frame_copy_size;     /* Amount to copy when creating a new frame */
 
 /* Local variables that do not need to be preserved over calls to RRMATCH(). */