diff --git a/sfm-common/sfm_common.h b/sfm-common/sfm_common.h
index cfd0ee3..2de739a 100644
--- a/sfm-common/sfm_common.h
+++ b/sfm-common/sfm_common.h
@@ -34,6 +34,10 @@
 
 #include "sensirion_arch_config.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
 #define SFM_CMD_READ_PRODUCT_IDENTIFIER 0xE102
 
 #define SFM_CMD_READ_SCALE_FACTOR_OFFSET_AND_FLOW_UNIT 0x3661
@@ -164,4 +168,8 @@ int16_t sfm_common_read_measurement_raw(const SfmConfig* sfm_config,
  */
 int16_t sfm_common_stop_continuous_measurement(SfmConfig* sfm_config);
 
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
 #endif /* SFM_COMMON_H */
diff --git a/sfm3003/sfm3003.h b/sfm3003/sfm3003.h
index 7d1b905..1b66354 100644
--- a/sfm3003/sfm3003.h
+++ b/sfm3003/sfm3003.h
@@ -29,10 +29,17 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
+#ifndef SFM3003_H
+#define SFM3003_H
+
 #include "sensirion_common.h"
 #include "sensirion_i2c.h"
 #include "sfm_common.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
 #define SFM3003_I2C_ADDRESS 0x28
 
 #define SFM3003_CMD_START_CONTINUOUS_MEASUREMENT_O2 \
@@ -61,3 +68,9 @@ int16_t sfm3003_probe(void);
  * Create a new SFM3003 instance
  */
 SfmConfig sfm3003_create(void);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* SFM3003_H */
diff --git a/sfm3019/sfm3019.h b/sfm3019/sfm3019.h
index 1b18169..759302e 100644
--- a/sfm3019/sfm3019.h
+++ b/sfm3019/sfm3019.h
@@ -29,10 +29,17 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
+#ifndef SFM3019_H
+#define SFM3019_H
+
 #include "sensirion_common.h"
 #include "sensirion_i2c.h"
 #include "sfm_common.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
 #define SFM3019_I2C_ADDRESS 0x2E
 
 #define SFM3019_CMD_START_CONTINUOUS_MEASUREMENT_O2 \
@@ -61,3 +68,9 @@ int16_t sfm3019_probe(void);
  * Create a new SFM3019 instance
  */
 SfmConfig sfm3019_create(void);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* SFM3019_H */