diff --git a/formats/format_g719.c b/formats/format_g719.c
index 903fbcde9810b430c97724b4129bec7109693a19..0a0eea17039351b284047791403db95328b986af 100644
--- a/formats/format_g719.c
+++ b/formats/format_g719.c
@@ -92,7 +92,7 @@ static int g719seek(struct ast_filestream *fs, off_t sample_offset, int whence)
 		return -1;
 	}
 
-	if ((max = ftello(fs->f) < 0)) {
+	if ((max = ftello(fs->f)) < 0) {
 		ast_log(AST_LOG_WARNING, "Unable to determine max position in g719 filestream %p: %s\n", fs, strerror(errno));
 		return -1;
 	}
diff --git a/formats/format_gsm.c b/formats/format_gsm.c
index 4cf6579a607954be22afebbd52cdd98f92e6815a..26306806c2fe504ebe815ba50a89f42f8ffd1417 100644
--- a/formats/format_gsm.c
+++ b/formats/format_gsm.c
@@ -120,7 +120,7 @@ static int gsm_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
 		return -1;
 	}
 
-	if ((max = ftello(fs->f) < 0)) {
+	if ((max = ftello(fs->f)) < 0) {
 		ast_log(AST_LOG_WARNING, "Unable to determine max position in g719 filestream %p: %s\n", fs, strerror(errno));
 		return -1;
 	}
diff --git a/formats/format_pcm.c b/formats/format_pcm.c
index 2a740ef5d08cc26f6b4a2910ea51b128ee12817d..f65a6202f809f79e0be60343d767de5663c4eb37 100644
--- a/formats/format_pcm.c
+++ b/formats/format_pcm.c
@@ -115,7 +115,7 @@ static int pcm_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
 		return -1;
 	}
 
-	if ((max = ftello(fs->f) < 0)) {
+	if ((max = ftello(fs->f)) < 0) {
 		ast_log(AST_LOG_WARNING, "Unable to determine max position in pcm filestream %p: %s\n", fs, strerror(errno));
 		return -1;
 	}
@@ -414,7 +414,7 @@ static int au_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
 		return -1;
 	}
 
-	if ((max = ftello(fs->f) < 0)) {
+	if ((max = ftello(fs->f)) < 0) {
 		ast_log(AST_LOG_WARNING, "Unable to determine max position in au filestream %p: %s\n", fs, strerror(errno));
 		return -1;
 	}
diff --git a/formats/format_siren14.c b/formats/format_siren14.c
index 08c2cbfbf7c10f21e70fadf5e2afd6c79794bbb7..f3e53e79556c11eb9e30a0a3375732949e5ec22f 100644
--- a/formats/format_siren14.c
+++ b/formats/format_siren14.c
@@ -92,7 +92,7 @@ static int siren14seek(struct ast_filestream *fs, off_t sample_offset, int whenc
 		return -1;
 	}
 
-	if ((max = ftello(fs->f) < 0)) {
+	if ((max = ftello(fs->f)) < 0) {
 		ast_log(AST_LOG_WARNING, "Unable to determine max position in siren14 filestream %p: %s\n", fs, strerror(errno));
 		return -1;
 	}
diff --git a/formats/format_siren7.c b/formats/format_siren7.c
index 955323ed263b74169207f7b084ad46caa68ec075..a07144bfc010a8be06d9866cbf8203a8d72abfcd 100644
--- a/formats/format_siren7.c
+++ b/formats/format_siren7.c
@@ -92,7 +92,7 @@ static int siren7seek(struct ast_filestream *fs, off_t sample_offset, int whence
 		return -1;
 	}
 
-	if ((max = ftello(fs->f) < 0)) {
+	if ((max = ftello(fs->f)) < 0) {
 		ast_log(AST_LOG_WARNING, "Unable to determine max position in siren7 filestream %p: %s\n", fs, strerror(errno));
 		return -1;
 	}
diff --git a/formats/format_sln.c b/formats/format_sln.c
index b90f6b27a277c5a84db280b03eaae0224596cb2c..982054459436b46c34d94d8720698e208080ba23 100644
--- a/formats/format_sln.c
+++ b/formats/format_sln.c
@@ -86,7 +86,7 @@ static int slinear_seek(struct ast_filestream *fs, off_t sample_offset, int when
 		return -1;
 	}
 
-	if ((max = ftello(fs->f) < 0)) {
+	if ((max = ftello(fs->f)) < 0) {
 		ast_log(AST_LOG_WARNING, "Unable to determine max position in sln filestream %p: %s\n", fs, strerror(errno));
 		return -1;
 	}
diff --git a/formats/format_vox.c b/formats/format_vox.c
index bfa0d8e4cac6e55ccdac38b0ff3edb97c839f28a..3f3b1eabb326b596624ca31cf5fe6f41a646ec06 100644
--- a/formats/format_vox.c
+++ b/formats/format_vox.c
@@ -90,7 +90,7 @@ static int vox_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
 		return -1;
 	}
 
-	if ((max = ftello(fs->f) < 0)) {
+	if ((max = ftello(fs->f)) < 0) {
 		ast_log(AST_LOG_WARNING, "Unable to determine max position in g719 filestream %p: %s\n", fs, strerror(errno));
 		return -1;
 	}
diff --git a/formats/format_wav.c b/formats/format_wav.c
index df09db353a42b5a6d38f669a2242c3ff48b86df1..ca12ca47b77d8807c5256e4e57884a1f68905844 100644
--- a/formats/format_wav.c
+++ b/formats/format_wav.c
@@ -468,7 +468,7 @@ static int wav_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
 		return -1;
 	}
 
-	if ((max = ftello(fs->f) < 0)) {
+	if ((max = ftello(fs->f)) < 0) {
 		ast_log(AST_LOG_WARNING, "Unable to determine max position in wav filestream %p: %s\n", fs, strerror(errno));
 		return -1;
 	}
diff --git a/formats/format_wav_gsm.c b/formats/format_wav_gsm.c
index bbf3339bc0ad2c2aabfa2e61202b084df310db06..e4c5051a29aa1f4262e58747a30395a9817e49f3 100644
--- a/formats/format_wav_gsm.c
+++ b/formats/format_wav_gsm.c
@@ -489,7 +489,7 @@ static int wav_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
 	}
 
 	/* XXX ideally, should round correctly */
-	if ((max = ftello(fs->f) < 0)) {
+	if ((max = ftello(fs->f)) < 0) {
 		ast_log(AST_LOG_WARNING, "Unable to determine max position in WAV filestream %p: %s\n", fs, strerror(errno));
 		return -1;
 	}