diff --git a/package/mine.cc b/package/mine.cc
index b77fbb7..6d8ec5b 100644
--- a/package/mine.cc
+++ b/package/mine.cc
@@ -1165,7 +1165,7 @@ std::string ZLib::compressString(const std::string& str)
     deflateEnd(&zs);
 
     if (ret != Z_STREAM_END) {
-        throw std::runtime_error("Exception during zlib decompression: (" + std::to_string(ret) + "): " + std::string((zs.msg != NULL ? zs.msg : "no msg"));
+        throw std::runtime_error("Exception during zlib decompression: (" + std::to_string(ret) + "): " + std::string((zs.msg != NULL ? zs.msg : "no msg")));
     }
 
     return outstring;
@@ -1202,7 +1202,7 @@ std::string ZLib::decompressString(const std::string& str)
     inflateEnd(&zs);
 
     if (ret != Z_STREAM_END) {
-        throw std::runtime_error("Exception during zlib decompression: (" + std::to_string(ret) + "): " + std::string((zs.msg != NULL ? zs.msg : "no msg"));
+        throw std::runtime_error("Exception during zlib decompression: (" + std::to_string(ret) + "): " + std::string((zs.msg != NULL ? zs.msg : "no msg")));
     }
 
     return outstring;
diff --git a/src/zlib.cc b/src/zlib.cc
index 10c52ec..563be4f 100644
--- a/src/zlib.cc
+++ b/src/zlib.cc
@@ -78,7 +78,7 @@ std::string ZLib::compressString(const std::string& str)
     deflateEnd(&zs);
 
     if (ret != Z_STREAM_END) {
-        throw std::runtime_error("Exception during zlib decompression: (" + std::to_string(ret) + "): " + std::string((zs.msg != NULL ? zs.msg : "no msg"));
+        throw std::runtime_error("Exception during zlib decompression: (" + std::to_string(ret) + "): " + std::string((zs.msg != NULL ? zs.msg : "no msg")));
     }
 
     return outstring;
@@ -115,7 +115,7 @@ std::string ZLib::decompressString(const std::string& str)
     inflateEnd(&zs);
 
     if (ret != Z_STREAM_END) {
-        throw std::runtime_error("Exception during zlib decompression: (" + std::to_string(ret) + "): " + std::string((zs.msg != NULL ? zs.msg : "no msg"));
+        throw std::runtime_error("Exception during zlib decompression: (" + std::to_string(ret) + "): " + std::string((zs.msg != NULL ? zs.msg : "no msg")));
     }
 
     return outstring;