diff --git a/src/libespeak-ng/compiledict.c b/src/libespeak-ng/compiledict.c
index c1b6fb71..245bc3d9 100644
--- a/src/libespeak-ng/compiledict.c
+++ b/src/libespeak-ng/compiledict.c
@@ -921,7 +921,7 @@ static void copy_rule_string(char *string, int *state_out)
 					mr = mnem_rules;
 					while (mr->mnem != NULL) {
 						len = strlen(mr->mnem);
-						if (memcmp(p, mr->mnem, len) == 0) {
+						if (strncmp(p, mr->mnem, len) == 0) {
 							value = mr->value;
 							p += len;
 							break;
diff --git a/src/libespeak-ng/compilembrola.c b/src/libespeak-ng/compilembrola.c
index 3d63ec70..09f74b09 100644
--- a/src/libespeak-ng/compilembrola.c
+++ b/src/libespeak-ng/compilembrola.c
@@ -95,7 +95,7 @@ espeak_ng_STATUS espeak_ng_CompileMbrolaVoice(const char *filepath, FILE *log, e
 		if ((p = strstr(buf, "//")) != NULL)
 			*p = 0; // truncate line at comment
 
-		if (memcmp(buf, "volume", 6) == 0) {
+               if (strncmp(buf, "volume", 6) == 0) {
 			mbrola_ctrl = atoi(&buf[6]);
 			continue;
 		}
diff --git a/src/libespeak-ng/dictionary.c b/src/libespeak-ng/dictionary.c
index 3ff8e52e..13611106 100644
--- a/src/libespeak-ng/dictionary.c
+++ b/src/libespeak-ng/dictionary.c
@@ -2672,7 +2672,7 @@ static const char *LookupDict2(Translator *tr, const char *word, const char *wor
 					}
 				}
 
-				if (memcmp(word2, p, n_chars) != 0)
+				if (strncmp(word2, p, n_chars) != 0)
 					condition_failed = 1;
 
 				if (condition_failed) {